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pro vyhledávání: '"J.A. Behr"'
Akademický článek
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Akademický článek
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Publikováno v:
Optics Communications. 282:554-557
We have measured the isotope shift between 41 K and 39 K in the 4s 1/2 → 5p 1/2 transition at 405 nm using saturation spectroscopy. Our measured isotope shift is 456.1 ± 0.8 MHz, implying a residual isotope shift (sum of specific mass shift and fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f2d3c83f57f5f57c59f03d858055390
https://doi.org/10.1016/j.optcom.2008.10.045
https://doi.org/10.1016/j.optcom.2008.10.045
Autor:
S. R. Nuss-Warren, A. A. Phillips, E. R. Tardiff, J.A. Behr, M. B. Smith, Michael E. Hayden, Kevin P. Coulter, G. C. Ball, T. Warner, C. E. Svensson, G. Hackman, Timothy Chupp, Matthew Pearson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 533:275-281
Techniques have been developed for on-line collection and transfer to a measurement cell of rare noble gas isotopes. A low-energy isotope separator beam is stopped in a foil. After collection, the foil is heated, and the noble gas atoms are cryopumpe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::571644f178a05b13d1ac6357e6fae51d
https://doi.org/10.1016/j.nima.2004.06.141
https://doi.org/10.1016/j.nima.2004.06.141
Publikováno v:
Optics Communications. 220:365-370
Using potassium atoms cooled with a MOT, ground-state hyperfine coherent population trapped (CPT) states were prepared in a magnetic (B) field, and the behavior of CPT states was experimentally studied. We carefully measured the preparation of the CP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74568dc62d95410ddf9134a8afb78b67
https://doi.org/10.1016/s0030-4018(03)01424-x
https://doi.org/10.1016/s0030-4018(03)01424-x
Autor:
I. Vollrath, D. Melconian, S. Fostner, D. Ashery, M. R. Pearson, J.A. Behr, S. Gu, M. Trinczek, M. Dombsky, M.N. Groves, G. C. Ball, I.S. Towner, Pierre Bricault, B. A. Brown, A. Gorelov, K. P. Jackson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 204:540-543
Magneto-optical traps provide a cold, compact cloud of radioactive atoms and therefore are an ideal source for use in precision nuclear β decay studies. Optical pumping techniques can add a new dimension to such experiments by efficiently polarizing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cbfb060fbf779e870b8e1dab358dd0d
https://doi.org/10.1016/s0168-583x(02)02129-8
https://doi.org/10.1016/s0168-583x(02)02129-8
Autor:
J.A. Behr
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 204:526-531
Neutral atoms trapped with modern laser cooling techniques offer the promise of improving several broad classes of experiments with radioactive isotopes. In nuclear β decay, neutrino spectroscopy from beta-recoil coincidences, along with highly pola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ccb91cf6fbc3b6dadca53d685258f95
https://doi.org/10.1016/s0168-583x(02)02126-2
https://doi.org/10.1016/s0168-583x(02)02126-2
Autor:
J. Urayama, A. Ghosh, S.B. Dutta, C. H. Holbrow, J.A. Behr, Gerald Gwinner, G.D. Sprouse, Luis A. Orozco, F. Xu, S.B. Cahn
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 351:256-260
We have tested and developed an ion beam apparatus for transporting alkali atoms made in heavy-ion reactions. Stopped recoils diffuse out of a hot thick target, are surface ionized, and extracted into a low-energy ion beam with efficiencies of approx
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15e1442a098c572fefa7f96c36d4ad2c
https://doi.org/10.1016/0168-9002(94)91351-x
https://doi.org/10.1016/0168-9002(94)91351-x
Autor:
J. Das, T. Lauritsen, Luis A. Orozco, Gerald Gwinner, J.A. Behr, S.B. Cahn, S. Shang, C. H. Holbrow, J. Schecker, G.D. Sprouse, F. Xu
Publikováno v:
Hyperfine Interactions. 74:23-29
Laser spectroscopic observations of nuclear reaction products produced with intensities of less than 104 atoms/second are now possible with several different methods. We describe the recoil into gas method which has recently been successful. This met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41259babd2c95771a087d0e252ab2577
https://doi.org/10.1007/bf02398613
https://doi.org/10.1007/bf02398613
Autor:
M. R. Pearson, M. Tandecki, H. Heggen, R. Collister, J.A. Behr, Seth Aubin, A. Teigelhöfer, Sebastian Raeder, J. Zhang, Gerald Gwinner, Luis A. Orozco, Eduardo Gomez, Jens Lassen
Publikováno v:
Journal of Instrumentation. 9:P10013-P10013
We demonstrate a new technique to prepare an offline source of francium for trapping in a magneto-optical trap. Implanting a radioactive beam of $^{225}$Ac, $t_{1/2} = 9.920(3)$ days, in a foil, allows use of the decay products, i.e.$^{221}$Fr, $t_{1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f5df866aca833e2fceeb4e3db039d2d
https://doi.org/10.1088/1748-0221/9/10/p10013
https://doi.org/10.1088/1748-0221/9/10/p10013