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Title: Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium

Abstract

We have studied collisional perturbations of radio-frequency (rf) electric-dipole (E1) transitions between the nearly degenerate opposite-parity levels in atomic dysprosium (Dy) in the presence of 10 to 80 {mu}Torr of H{sub 2}, N{sub 2}, He, Ar, Ne, Kr, and Xe. Collisional broadening and shift of the resonance, as well as the attenuation of the signal amplitude are observed to be proportional to the foreign-gas density with the exception of H{sub 2} and Ne, for which no shifts were observed. Corresponding rates and cross sections are presented. In addition, rates and cross sections for O{sub 2} are extracted from measurements using air as foreign gas. The primary motivation for this study is the need for accurate determination of the shift rates, which are needed in a laboratory search for the temporal variation of the fine-structure constant [A. T. Nguyen, D. Budker, S. K. Lamoreaux, and J. R. Torgerson, Phys. Rev. A 69, 22105 (2004)].

Authors:
;  [1];  [1];  [1]; ;  [2]
  1. Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300 (United States)
  2. University of California, Los Alamos National Laboratory, Physics Division, P-23, MS-H803, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
20786334
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.72.063409; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON; ATOM-ATOM COLLISIONS; ATOM-MOLECULE COLLISIONS; ATOMIC BEAMS; ATOMS; CROSS SECTIONS; DYSPROSIUM; E1-TRANSITIONS; ELECTRIC DIPOLES; FINE STRUCTURE; HELIUM; HYDROGEN; KRYPTON; LINE BROADENING; MOLECULES; NEON; NITROGEN; OXYGEN; PARITY; RADIOWAVE RADIATION; SPECTRAL SHIFT; XENON

Citation Formats

Cingoez, A, Lapierre, Alain, Nguyen, A -T, University of California, Los Alamos National Laboratory, Physics Division, P-23, MS-H803, Los Alamos, New Mexico 87545, Budker, D, Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Lamoreaux, S K, and Torgerson, J R. Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Cingoez, A, Lapierre, Alain, Nguyen, A -T, University of California, Los Alamos National Laboratory, Physics Division, P-23, MS-H803, Los Alamos, New Mexico 87545, Budker, D, Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Lamoreaux, S K, & Torgerson, J R. Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium. United States. https://doi.org/10.1103/PHYSREVA.72.0
Cingoez, A, Lapierre, Alain, Nguyen, A -T, University of California, Los Alamos National Laboratory, Physics Division, P-23, MS-H803, Los Alamos, New Mexico 87545, Budker, D, Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Lamoreaux, S K, and Torgerson, J R. 2005. "Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium". United States. https://doi.org/10.1103/PHYSREVA.72.0.
@article{osti_20786334,
title = {Collisional perturbation of radio-frequency E1 transitions in an atomic beam of dysprosium},
author = {Cingoez, A and Lapierre, Alain and Nguyen, A -T and University of California, Los Alamos National Laboratory, Physics Division, P-23, MS-H803, Los Alamos, New Mexico 87545 and Budker, D and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Lamoreaux, S K and Torgerson, J R},
abstractNote = {We have studied collisional perturbations of radio-frequency (rf) electric-dipole (E1) transitions between the nearly degenerate opposite-parity levels in atomic dysprosium (Dy) in the presence of 10 to 80 {mu}Torr of H{sub 2}, N{sub 2}, He, Ar, Ne, Kr, and Xe. Collisional broadening and shift of the resonance, as well as the attenuation of the signal amplitude are observed to be proportional to the foreign-gas density with the exception of H{sub 2} and Ne, for which no shifts were observed. Corresponding rates and cross sections are presented. In addition, rates and cross sections for O{sub 2} are extracted from measurements using air as foreign gas. The primary motivation for this study is the need for accurate determination of the shift rates, which are needed in a laboratory search for the temporal variation of the fine-structure constant [A. T. Nguyen, D. Budker, S. K. Lamoreaux, and J. R. Torgerson, Phys. Rev. A 69, 22105 (2004)].},
doi = {10.1103/PHYSREVA.72.0},
url = {https://www.osti.gov/biblio/20786334}, journal = {Physical Review. A},
issn = {1050-2947},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}