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Title: A 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 3 x 10{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 3 x 10{sup 17} at./s). The dependences of the flux on the gas flow rate, laser power, and lamp parameters are investigated.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
944032
Report Number(s):
ANL/PHY/JA-57500
Journal ID: ISSN 0034-6748; RSINAK; TRN: US0900504
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Rev. Sci. Instrum.; Journal Volume: 78; Journal Issue: Feb. 8, 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ATOMIC BEAMS; ATOMS; DECAY; EXCITATION; FLUX DENSITY; GAS FLOW; GROUND LEVEL; KRYPTON; LASERS; LIGHT BULBS; PHOTONS

Citation Formats

Ding, Y., Hu, S.-M., Bailey, K., Davis, A. M., Dunford, R. W., Lu, Z.-T., O'Connor, T. P., Young, L., Univ. of Chicago, and Univ. of Science and Technology of China. A 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., Univ. of Chicago, & Univ. of Science and Technology of China. A 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., Univ. of Chicago, and Univ. of Science and Technology of China. Thu . "A thermal beam of metastable krypton atoms produced by optical excitation.". United States. doi:10.1063/1.2437193.
@article{osti_944032,
title = {A 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 Univ. of Chicago and Univ. of Science and Technology of China},
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 3 x 10{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 3 x 10{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 = {Rev. Sci. Instrum.},
number = Feb. 8, 2007,
volume = 78,
place = {United States},
year = {Thu Feb 08 00:00:00 EST 2007},
month = {Thu Feb 08 00:00:00 EST 2007}
}