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Title: Thermal beam of metastable krypton atoms produced by optical excitation

Abstract

A room-temperature beam of krypton atoms in the metastable 5s[3/2]{sub 2} level is demonstrated via an optical excitation method. A Kr-discharge lamp is used to produce vacuum ultraviolet photons at 124 nm for the first-step excitation from the ground level 4p{sup 6} {sup 1}S{sub 0} to the 5s[3/2]{sub 1} level. An 819 nm Ti:sapphire laser is used for the second-step excitation from 5s[3/2]{sub 1} to 5s[3/2]{sub 2} followed by a spontaneous decay to the 5s[3/2]{sub 2} metastable level. A metastable atomic beam with an angular flux density of 3x10{sup 14} s{sup -1} sr{sup -1} is achieved at the total gas flow rate of 0.01 cm{sup 3}/s at STP (or 3x10{sup 17} at./s). The dependences of the flux on the gas flow rate, laser power, and lamp parameters are investigated.

Authors:
; ; ; ; ; ; ;  [1];  [2];  [3];  [2];  [2];  [2]
  1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
  2. (United States)
  3. (China)
Publication Date:
OSTI Identifier:
20953250
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 78; Journal Issue: 2; Other Information: DOI: 10.1063/1.2437193; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMIC BEAMS; ATOMS; DECAY; EXCITATION; FLUX DENSITY; GAS FLOW; GROUND LEVEL; KRYPTON; LASERS; METASTABLE STATES; PHOTON-ATOM COLLISIONS; PHOTONS; SAPPHIRE; TEMPERATURE RANGE 0273-0400 K; ULTRAVIOLET RADIATION

Citation Formats

Ding, Y., Hu, S.-M., Bailey, K., Davis, A. M., Dunford, R. W., Lu, Z.-T., O'Connor, T. P., Young, L., Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois 60637, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60639, and Department of Physics, University of Chicago, Chicago, Illinois 60637. Thermal beam of metastable krypton atoms produced by optical excitation. United States: N. p., 2007. Web. doi:10.1063/1.2437193.
Ding, Y., Hu, S.-M., Bailey, K., Davis, A. M., Dunford, R. W., Lu, Z.-T., O'Connor, T. P., Young, L., Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois 60637, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60639, & Department of Physics, University of Chicago, Chicago, Illinois 60637. Thermal beam of metastable krypton atoms produced by optical excitation. United States. doi:10.1063/1.2437193.
Ding, Y., Hu, S.-M., Bailey, K., Davis, A. M., Dunford, R. W., Lu, Z.-T., O'Connor, T. P., Young, L., Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois 60637, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60639, and Department of Physics, University of Chicago, Chicago, Illinois 60637. Thu . "Thermal beam of metastable krypton atoms produced by optical excitation". United States. doi:10.1063/1.2437193.
@article{osti_20953250,
title = {Thermal beam of metastable krypton atoms produced by optical excitation},
author = {Ding, Y. and Hu, S.-M. and Bailey, K. and Davis, A. M. and Dunford, R. W. and Lu, Z.-T. and O'Connor, T. P. and Young, L. and Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026 and Department of the Geophysical Sciences, University of Chicago, Chicago, Illinois 60637 and Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60639 and Department of Physics, University of Chicago, Chicago, Illinois 60637},
abstractNote = {A room-temperature beam of krypton atoms in the metastable 5s[3/2]{sub 2} level is demonstrated via an optical excitation method. A Kr-discharge lamp is used to produce vacuum ultraviolet photons at 124 nm for the first-step excitation from the ground level 4p{sup 6} {sup 1}S{sub 0} to the 5s[3/2]{sub 1} level. An 819 nm Ti:sapphire laser is used for the second-step excitation from 5s[3/2]{sub 1} to 5s[3/2]{sub 2} followed by a spontaneous decay to the 5s[3/2]{sub 2} metastable level. A metastable atomic beam with an angular flux density of 3x10{sup 14} s{sup -1} sr{sup -1} is achieved at the total gas flow rate of 0.01 cm{sup 3}/s at STP (or 3x10{sup 17} at./s). The dependences of the flux on the gas flow rate, laser power, and lamp parameters are investigated.},
doi = {10.1063/1.2437193},
journal = {Review of Scientific Instruments},
number = 2,
volume = 78,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}