. Mass spectrometer main Mass spectrometer See also List of light sources Photometry ... Mass spectrometer Monochromator Monochromator Czerny Turner monochromator Scanning Mobility Particle ... html spectrometer.html A CD spectrometer Build from CD and cereal box Spectrographs of common light ... pauld activities CDspectrometer cdspectrometer.html CD spectrometer CD cardboard tube or cereal ... id Spektrometer it Spettrometro kn lt Spektrometras nl Spectrometer ja pt Espectr metro ... more details
An imaging spectrometer is an instrument used in the field of imaging spectroscopy to acquire a spectrally resolved image of an object or scene, often referred to as a datacube due to the three dimensional representation of the data. Namely, two axes of the image corresponds to distance and the third to wavelength . The principle of operation is the same as that of the simple spectrometer , but special care is taken to avoid optical aberration s for better image quality. Example imaging spectrometer types include filtered camera, whiskbroom scanner, pushbroom scanner, integral field spectrograph or related dimensional reformatting techniques , wedge imaging spectrometer, Fourier transform imaging spectrometer, computed tomography imaging spectrometer CTIS , image replicating imaging spectrometer IRIS , coded aperture snapshot spectral imager CASSI , and image mapping spectrometer IMS . List of imaging spectrometer instruments http www.geo.unizh.ch schaep research apex is list.html Home page of the AVIRIS imaging spectrometer http aviris.jpl.nasa.gov Home page of the Moderate resolution Imaging Spectroradiometer MODIS imaging spectrometer http modis.gsfc.nasa.gov Computed tomographic imaging spectrometer CTIS research lab http www.optics.arizona.edu detlab Coded aperture snapshot spectral imager CASSI research lab http www.disp.duke.edu projects CASSI index.ptml Example of a commercial Fourier transform imaging spectrometer http www.hyper cam.com Home page of the near infrared integral field imaging spectrograph at the Gemini Observatory Gemini observatory http www.gemini.edu sciops instruments nifs NIFSIndex.html Image mapping spectrometer IMS research lab http www.owlnet.rice.edu tt3 index.html See also Spectral imaging Category Imaging Category Spectrometers optics stub ... more details
In an Electron spectrometer , an incoming beam of electrons is bent with electric or magnetic fields. As higher energy electrons will be bent less by the beam, this produces a spatially distributed range of energies. Electron spectrometers are used on a range of scientific equipment, including particle accelerator s, transmission electron microscope s, and astronomical satellite s. An electrostatic electron spectrometer uses the electric field, which cause electrons to move along field gradients, whereas magnetic devices cause electrons to move at right angles to the field. Magnetic fields will act in a direction perpendicular to the electron propagation, thereby conserving velocity, whereas electrostatic fields will cause electrons to move along the field gradient, ref name Zworykin45 which may change electron energies if the component of the direction of propagation and field gradients are not perpendicular. Owing to these effects, sector based designs are commonly used in electron spectrometers. The effective potential in the solution of motion in a magnetic or electric system with rotational symmetry leads to radial focusing onto a mean radius. ref name Zworykin45 cite book title Electron optics and the electron microscope author Zworykin,V Morton, G Ramberg, E Hillier J Vance A year 1945 publisher John Wiley and Sons, New York ref By superposition of a Quadrupole magnetic field quadrupole field axial focusing is possible while weakening the radial focusing, until the astigmatism vanishes. By breaking the rotational symmetry a bit and varying the electrostatic potential along the mean path of the spherical aberration is minimized. The spectrometer can use entrance and exit slits or use a small source, which only emits into specific angle and a small detector. Photoelectron spectra from single crystals exhibit a dependency on the emission angle, so that the entrance slit is needed. All the electrons from an isotopic source may be sucked off and focused into a directed ... more details
Orphan date February 2009 Impact spectrometer called also sonicspctometer is a method for characterizing properties of fluids and metal . It is part of method acoustic spectroscopy By using on a tube filled with fluid or a metal that mounted in its edge the device is ready to impact spectroscopy test. An ultrasonic hammer the same ultrasonic probe that use in ultrasonic welding , that consist a linear ultrasonic motor terminated by iron mass, create an impact on the device under test. The sonic wave is measured by FFT instrument. This method is used in quality check procedure of fluid and in metallurgy tests. References AEWG The Acoustic Emission Working Group http www.aewg.org . EWGAE The European Working Group JCEA The Japanese Working Group on Acoustic Emission GLEA The Latin American Working Group on Acoustic Emission http www.ndt.net article v07n09 19 19.htm . Category Spectroscopy Category Acoustics ... more details
Deleted image removed Image Main TES instrument.jpg frame right Tropospheric Emission Spectrometer Tropospheric Emission Spectrometer or TES is a satellite instrument designed to measure the state of the earth s troposphere . It is an infrared Fourier transform spectroscopy Fourier Transform spectrometer and provides key data for studying tropospheric chemistry, troposphere biosphere interaction, and troposphere stratosphere exchanges. TES is built for NASA by the Jet Propulsion Laboratory , California Institute of Technology in Pasadena, California . It was successfully launched into polar orbit aboard NASA s third earth Observing System s spacecraft Aura satellite EOS Aura at 10 02 UTC on July 15, 2004. clear See also Space based meteorological observation External links http tes.jpl.nasa.gov NASA JPL s TES page http aura.gsfc.nasa.gov instruments tes index.html NASA Aura TES page Category Spectrometers it Tropospheric Emission Spectrometer ... more details
Cleanup date November 2008 An Acousto Optical Spectrometer AOS is based on the diffraction of light at ultrasound ultrasonic wave s. A piezoelectric transducer , driven by the RF signal from the Receiver radio receiver , generates an Acoustics acoustic wave in a crystal the so called Acousto optic modulator Bragg cell . This acoustic wave modulates the refractive index and induces a phase waves phase grating . The Bragg cell is illuminated by a collimated laser beam. The angular dispersion of the diffracted light represents a true image of the IF spectrum according to the amplitude and wavelengths of the acoustic waves in the crystal. The spectrum is detected by using a single linear diode array Charge coupled device CCD , which is placed in the focal plane of an imaging optics. Depending on the crystal and the focal length of the imaging optics, the Optical resolution resolution of this type of spectrometer can be varied. Image AOS prinzip.png thumb 640px principle of an Acousto Optical Spectrometer Category Spectrometers ... more details
File HELIOS side view.JPG thumb The HELIOS spectrometer. The Helical Orbit Spectrometer HELIOS is a measurement device for studying nuclear reactions in inverse kinematics. ref Lighthall, J.C. et al. http dx.doi.org 10.1016 j.nima.2010.06.220 Commissioning of the HELIOS Spectrometer . Nuclear Instruments and Methods in Physics Research A 622 2010 97 106 ref It is installed at the Argonne Tandem Linear Accelerator System ATLAS facility at Argonne National Laboratory . History The HELIOS concept was first proposed at the Workshop on Experimental Equipment for an Advanced ISOL Facility at Lawrence Berkeley National Laboratory in 1998. ref J.P. Schiffer Solenoidal Spectrometer . in I.Y. Lee Ed. , Proceedings of the Workshop on Experimental Equipment for an Advanced ISOL Facility, Lawrence Berkeley National Laboratory, 1998, LBNL 42138, pp. 667 678. ref The concept was introduced as a next generation large acceptance spectrometer for measuring heavy ion reactions. Concept File B12 schem.png thumb Schematic of the HELIOS spectrometer. Schematically, HELIOS is based around a large bore superconducting solenoid. Accelerated heavy ion beams enter the solenoid along the magnetic axis, passing through a hollow detector array. The beam then intercepts a light ion target, also on the magnetic axis. In the configuration shown in the figure, charged reaction products ejected rearward in the laboratory frame move in helical orbits to the detector array. Heavy beam like recoils are kinematically ... University , and Manchester University to construct, characterize, and commission the HELIOS spectrometer. The construction of the spectrometer began with the delivery of the superconducting solenoid ... into a nuclear spectrometer and connected to the ATLAS beam line. The first stable beam ... characterize the performance of the spectrometer. The radioactive ion beam commissioning of HELIOS ... DEFAULTSORT Helical Orbit Spectrometer Helios Category Argonne National Laboratory Category Spectrometers ... more details
ACIS , the AXAF CCD Imaging Spectrometer, is an instrument built by a team from the Massachusetts Institute of Technology s Center for Space Research and the Pennsylvania State University for the Chandra X ray Observatory formerly, AXAF . Because of its ability to accurately measure the energy of single photons, it serves as an X Ray integral field spectrograph for Chandra. External links http acis.mit.edu acis Official ACIS website at MIT http chandra.harvard.edu about science instruments2.html DEFAULTSORT Advanced Ccd Imaging Spectrometer Category Spacecraft instruments Category Telescope instruments US spacecraft stub ... more details
A helium mass spectrometer is an instrument commonly used to detect and locate small leaks. It was initially developed in the Manhattan Project during World War II to find extremely small leaks in the Gaseous ... spectrometer designed by Dr. A.O.C. Nier tuned on the helium mass. Because of its industrial use, the material ..., and the rate of the leak is detected by a mass spectrometer . Detection technique The leak detection ... within a spectrometer tube , which is the heart of the system. Helium is used as a tracer because ... sup is slightly less than 3 ml per century at STP. Internal spectrometer tube operation In the spectrometer tube, the heart of the helium mass spectrometer, the electrons produced by a hot filament enter ... mass spectrometer leak detectors are used in production line industries such as refrigeration and air ... to allow for mass spectrometer operation. If the size of the part is too large, an additional vacuum ... operating pressure has been reached, the mass spectrometer can start its measuring operation. If leakage ... sector mass spectrometer. A signal will inform the operator of the value of the leakage encountered ... system included in the instrument will be able to reach low enough pressure to allow for mass spectrometer ..., the mass spectrometer can start its measuring operation. If leakage is encountered the small and agile ... any tracer gas molecule into the analyzer cell of the magnetic sector mass spectrometer. A signal ... to a vacuum pumping system and a leak detector. Once the vacuum has reached the mass spectrometer ... and a mass spectrometer. The tiny amount of gas that entered the device under pressure will be released in the vacuum chamber and sent to the mass spectrometer where the leak rate will be measured. This test .... The mass spectrometer is fitted with a special device, a sniffer probe, that allows it to sample ... spectrometer. This mode of operation is frequently used to locate a leak that has been detected ... Detection DEFAULTSORT Helium mass spectrometer Category Mass spectrometry Category Spectrometers ... more details
A prolate trochoidal mass spectrometer is an chemical analysis instrument in which the ions of different mass to charge ratio are separated by means of mutually perpendicular electric field electric and magnetic field s so that the ions follow a prolate trochoid trochoidal path. ref name PhysRev.53.521 cite journal title A New Mass Spectrometer with Improved Focusing Properties journal Phys. Rev. date 1938 first Walker last Bleakney coauthors John A. Hipple, Jr. volume 53 issue 7 pages 521 529 doi 10.1103 PhysRev.53.521 url http link.aps.org abstract PR v53 p521 format accessdate 2007 10 02 ref ref GoldBookRef title Prolate trochoidal mass spectrometer file P04874 ref These devices are sometimes called cycloidal mass spectrometers, although the path is not a cycloid the prolate trochoid path has loops, the cycloid has cusps . Applications The instruments are used for the analysis of gases ref name pmid3149538 cite journal author Adamczyk B, Bederski K, W jcik L title Mass spectrometric investigation of dissociative ionization of toxic gases by electrons at 20 1000 eV journal Biomed. Environ. Mass Spectrom. volume 16 issue 1 12 pages 415 7 year 1988 pmid 3149538 doi 10.1002 bms.1200160181 ref and in gas chromatography mass spectrometry . ref name pmid8154592 cite journal author Laram e JA, Deinzer ML title Capillary gas chromatographic introduction of environmental compounds into a trochoidal electron monochromator mass spectrometer journal Anal. Chem. volume 66 issue 5 pages 719 24 year 1994 pmid 8154592 doi 10.1021 ac00077a022 ref The trochoidal configuration can also be used as the basis of an electron monochromator . ref name pmid12964744 cite journal author Voinov VG, Vasil ev YV, Morr J, Barofsky DF, Deinzer ML, Gonin M, Egan TF, F hrer K title A resonant electron capture time of flight MS with trochoidal electron monochromator journal Anal. Chem. volume 75 issue ... Cite patent US 6624410 Cycloidal mass spectrometer Cite patent US 6617576 Cycloidal mass spectrometer ... more details
name Schoen1985 Cite journal last Schoen first A. year 1985 title A hybrid BEQQ mass spectrometer journal ... Harrison first A. year 1986 title A hybrid BEQQ mass spectrometer for studies in gaseous ion chemistry ... mass spectrometer for the study of ion surface collision processes journal Review of Scientific ... quadrupole time of flight mass spectrometer. A triple quadrupole mass spectrometer with the final ... FT mass spectrometer performance characterization and use in the comparative analysis of histone H3 ... of a hybrid linear ion trap orbitrap mass spectrometer journal Anal. Chem. volume 78 issue 7 pages ... Olsen JV, de Godoy LM, Li G, et al. title Parts per million mass accuracy on an Orbitrap mass spectrometer ... 10.1021 ac0514624 ref mass spectrometer is marketed by Thermo Scientific as the LTQ FT and LTQ Orbitrap ... more details
volume 26 issue 4 pages 183 doi 10.1002 oms.1210260404 ref The first triple quadrupole mass spectrometer ... mass spectrometer journal Journal of the American Chemical Society volume 100 issue 7 pages 2274 ... Enke first2 C. G. ref References Reflist See also Hybrid mass spectrometer Mass spectrometry analytical ... more details
Spectrometer , or GRS , is an instrument for measuring the distribution or spectrum see Gamma spectroscopy ... , the Burst and Transient Spectrometry Experiment BATSE and the OSSI Oriented Scintillation Spectrometer ... spectrometer SPI on the ESA INTEGRAL mission are examples of cosmic spectrometers, while the GRS on the Solar Maximum Mission SMM and the imaging Ge spectrometer on the RHESSI satellite have been devoted ... Prospector Gamma Ray Spectrometer author D. J. Lawrence, W. C. Feldman, B. L. Barraclough, A. B. Binder ... used a gamma ray spectrometer and two neutron detectors. GRS instruments supply data on the distribution ... ray spectrometer looks at these signatures, or energies, coming from the elements present in the target ... likely present in the form of water ice, the spectrometer will be able to measure directly the amount ..., the spectrometer will allow scientists to peer into this shallow subsurface of Mars and measure ... ray spectrometer used on the Odyssey spacecraft consists of four main components the gamma sensor head, the neutron spectrometer, the high energy neutron detector, and the central electronics assembly ... from any gamma rays coming from the spacecraft itself. The initial spectrometer activity, lasting ... of the mission. The two neutron detectors the neutron spectrometer and the high energy neutron ... right 150px The Gamma Ray Spectrometer weighs 30.5 kilograms 67.2 lb and uses 32 watts of power ... Odyssey Gamma Ray Spectrometer Instrument Suite author W.V. Boynton, W.C. Feldman, I.G. Mitrofanov ... MasterCatalog?sc 2001 014A&ex 2 The neutron spectrometer is 173 by 144 by 314 mm 6.8 by 5.7 by 12.4 ... Ray Spectrometer page http grs.lpl.arizona.edu Mars Odyssey GRS instrument site at the University of Arizona http www.lpi.usra.edu expmoon Apollo16 A16 Orbital gamma.html Apollo 16 Gamma Ray Spectrometer ... References Reflist DEFAULTSORT Gamma Ray Spectrometer Category Spectrometers ms Spektrometer Sinar ... more details
www.universetoday.com tag alpha magnetic spectrometer Final Shuttle Flight Will Be Delayed at Least ... Magnetic Spectrometer , also designated AMS 02 , is a particle physics experiment module that is to be mounted ... www.esa.int esaCP SEMZE8BO3DG index 0.html ESA Alpha Magnetic Spectrometer arrives at launch site ... STS 134 will be the second to last Space Shuttle flight. History The Alpha Magnetic Spectrometer ... Arefiev first9 A. title The Alpha Magnetic Spectrometer AMS on the International Space Station Part ... Magnetic Spectrometer url http www.esa.int esaHS SEMGO8AK73G index 0.html date 17 December 2009 ... of the Superconducting Magnet for the Alpha Magnetic Spectrometer, IEEE TRANSACTIONS ON APPLIED ... by the Alpha Magnetic Spectrometer Project Office at NASA s Johnson Space Center in Houston, Texas ... www.nasa.gov mission pages station science experiments AMS 02.html title Alpha Magnetic Spectrometer ... and Alpha Magnetic Spectrometer when will we stop searching? work J. Phys. G Nucl. Part. Phys ... and Particle Physics div External links Commons category Alpha Magnetic Spectrometer http www.ams02.org ... 72MB http www.facebook.com pages Alpha Magnetic Spectrometer AMS 02 61514694953 Alpha Magnetic Spectrometer ... Category Future spaceflights bg ca Alpha Magnetic Spectrometer cs Alpha Magnetic Spectrometer de Alpha Magnet Spektrometer es Espectr metro Magn tico Alpha fr Spectrom tre magn tique Alpha it Alpha Magnetic Spectrometer hu Alfa m gneses spektrom ter nl Alpha Magnetic Spectrometer ja pl Alpha Magnetic Spectrometer ru fi Alpha Magnetic Spectrometer vi M y o ph t Alpha zh ... more details
The Thermal Emission Spectrometer TES is an instrument on board Mars Global Surveyor . TES collects two types of data, hyperspectral thermal infrared data from 6 to 50 micrometers micrometers m and bolometric visible NIR 0.3 to 2.9 m measurements. TES has six detectors arranged in a 2x3 array, and each detector has a field of view of approximately 3 6 km on the surface of Mars. The TES instrument uses the natural harmonic vibrations of the chemical bonds in materials to determine the composition of gases, liquids, and solids. TES identified a large 30,000 square kilometer area that contained the mineral olivine . Olivine was found in the Nili Fossae formation. It is thought that the ancient impact that created the Isidis basin resulted in faults that exposed the olvine. Olvine is present in many mafic volcanic rocks . In the presence of water it weathers into minerals such as goethite , chlorite , smectite , maghemite , and hematite . Olivine was also discovered in many other small outcrops within 60 degrees north and south of the equator. ref Hoefen, T. et al. 2003. Discovery of Olivine in the Nili Fossae Region of Mars. Science 302. 627 630. ref Olivine has also been found in the SNC shergottite , nakhlite, and chassigny meteorites that are generally accepted to have come from Mars. ref Hamiliton, W. et al. 1997. Journal of Geophysical Research 102. 25593 ref Later studies have found the olivine rich rocks to cover over 113,000 square kilometers. That is 11 times larger than the five volcanoes on the Big Island of Hawaii. ref http www.soest.hawaii.edu SOEST News News PressReleases amilton ref References Reflist cite journal author Christensen, P. R. Bandfield, J. L. Hamilton, V. E. Ruff, S. W. Kieffer, H. H. Titus, T. N. Malin, M. C. Morris, R. V. Lane, M. D. Clark, R. L. Jakosky, B. M. Mellon, M. T. Pearl, J. C. Conrath, B. J. Smith, M. D. Clancy, R. T. Kuzmin ..., M. title Mars Global Surveyor Thermal Emission Spectrometer experiment Investigation ... more details
Image Toms 2004 09 06 FULLDAY GLOB.PNG thumb right Near global ozone for 6 September 2004 from NASA GSFC The Total Ozone Mapping Spectrometer TOMS is a satellite instrument for measuring ozone values. Of the five TOMS instruments which were built, four entered successful orbit. Nimbus program Nimbus 7 and Meteor satellite Meteor 3 provided global measurements of total column ozone on a daily basis and together provide a complete data set of daily ozone from November 1978 December 1994 . After an eighteen month period when the program had no on orbit capability, ADEOS TOMS was launched on August 17, 1996 and provided data until the satellite which housed it lost power on June 29, 1997. Earth Probe TOMS was launched on July 2, 1996 to provide supplemental measurements, but was boosted to a higher orbit to replace the failed ADEOS. The only total failure in the series was QuikTOMS, which was launched on September 21, 2001 but did not achieve an orbit. The transmitter for the Earth Probe TOMS failed on December 2, 2006. http toms.gsfc.nasa.gov news news.html mar05 Since January 1, 2006 data from the Ozone Monitoring Instrument OMI has replaced Earth Probe TOMS http jwocky.gsfc.nasa.gov . External links http toms.gsfc.nasa.gov TOMS home page http toms.umbc.edu TOMS Volcanic Emissions Group TOMS images in Wikipedia gallery Image 160658main2 OZONE large 350.png Image of the largest Antarctic ozone hole recorded to date September 2006 . Image Toms 2004 09 06 FULLDAY GLOB.PNG Near global ozone for 6 September 2004 from NASA GSFC. Image TOMS AI Jun16 91.gif Mount Pinatubo 1991 ash and aerosol. Image TOMS SO2 Jun17 91.gif Mount Pinatubo 1991 sulfur dioxide. Image TOMS SO2 time nov03.png Sulfur dioxide emissions from volcanoes. gallery Category Ozone depletion US spacecraft stub ... more details
Magnetic Proton Recoil neutron spectrometer is a large high resolution neutron spectrometer installed at JET . History The Magnetic Proton Recoil MPR neutron spectrometer is a thin foil spectrometer which was installed at JET in 1996 and upgraded MPRu 2001 2005. Principle In the MPR the fusion neutron s are collimate d into a neutron beam. The neutron beam is directed onto a thin plastic film CH2 where the neutrons scatter elastically on the proton s of the foil. The recoil protons emitted in the forward direction enter a magnetic part of the spectrometer where they are momentum analyzed and focused onto the focal plane. An array of plastic scintillator s coupled to photomultiplier tube s PMTs register the spatial distribution of the protons. This proton distribution is then related to the neutron energy spectrum. Field of view The MPR has a semi tangential line of sight through the Plasma physics plasma . The MPR has a 700 mm long cylindrical steel neutron collimator with a 10 cm2 bore. At a distance 170 mm behind the end of the collimator is placed a 10 cm2 polythene conversion foil, defining the active area of the spectrometer. The collimator foil arrangement defines the spectrometers field of view into the plasma. Uses The MPR determines the neutron spectrum from which important plasma parameters can be determined, such as the ion temperature, the collective motion of the main plasma, the fuel ion densities and their velocity distributions. References reflist http dx.doi.org 10.1016 j.nima.2009.09.025 The thin foil magnetic proton recoil neutron spectrometer MPRu at JET Category Fusion reactors Category Neutron facilities Category Spectrometers ... more details
proton X ray spectrometer author R. Rieder, H. W nke, T. Economou, A. Turkevich journal J. Geophysical ... cite journal title An Alpha Proton X Ray Spectrometer for Mars 96 and Mars Pathfinder author Rieder ... X ray spectrometer for the Mars Exploration Rovers author R. Rieder, R. Gellert, J. Br ckner ... cite web url http athena.cornell.edu pdf tb apxs.pdf title Alpha Particle X Ray Spectrometer APXS 2 ... DEFAULTSORT Alpha Particle X Ray Spectrometer Category Spectroscopy Category Spacecraft instruments de Alphapartikel R ntgenspektrometer it Alpha Particle X Ray Spectrometer ja X uk ... more details
The Canadian Penning Trap Mass Spectrometer CPT is one of the major pieces of experimental equipment that is installed on the Argonne Tandem Linear Accelerator System ATLAS superconducting heavy ion linac facility at the Physics Division of the Argonne National Laboratory . It was developed and operated by physicist Guy Savard and a collaboration of other scientists at Argonne, the University of Manitoba , McGill University , Texas A&M University and the State University of New York . Development The CPT was originally built for the TASCC Tandem Accelerator Superconducting Cyclotron TASCC facility at Chalk River Laboratories in Chalk River, Ontario, Canada. However, it was transferred to Argonne National Laboratory when the TASCC accelerator was decommissioned in 1998 due to funding issues. ref http www.sciencedirect.com science? ob ArticleURL& udi B6TJN 41MHFHC 17& user 1722207& rdoc 1& fmt & orig search& sort d&view c& acct C000053990& version 1& urlVersion 0& userid 1722207&md5 4c620ed80f2930d6ee677867c070647d ref The CPT spectrometer is designed to provide high precision mass measurements of radioactivity short lived isotopes using radio frequency RF fields. Accurate mass measurements of particular isotopes such as selenium selenium 68 are important in the understanding of the detailed reaction mechanism s involved in the rp process rapid proton capture process , which occurs in astrophysical events like supernova supernovae explosions and X ray burst s. An X ray burst is one possible site for the rp process mechanism which involves the accretion of hydrogen and helium from one star onto the surface of its neutron star binary companion. Mass measurements are required as key inputs to network calculations used to describe this process in terms of the abundances of the nuclides ... the rp process with the Canadian Penning trap mass spectrometer journal European Physical .... Vaz title The Canadian Penning Trap Spectrometer at Argonne journal Hyperfine Interactions volume ... more details
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