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Title: Production of polarized hydrogen with an improved atomic beam source

Abstract

A source of atomic beams of polarized H and D will be described. High-field tapered permanent magnet sixpoles (1.5 T) are used for Stern-Gerlach separation of the atoms. The beam is cooled with a liquid nitrogen cooled dissociator nozzle. Studies of gas scattering and dissociator output were combined with calculations of atomic trajectories through sixpole magnets to find the optimum source design. The total hydrogen beam intensity is 8.6x10{sup 16} atoms/s in two hyperfine spin states. The measured beam profile and intensity agree with calculations. The beam intensity measured through a 1 cm diameter, 13 cm magnet is (6.7 {+-}0.1)x10{sup 16} atoms/s. A hydrogen beam in a single spin state has also been made with an intensity of (3.6{+-}0.1)x10{sup 16} atoms/s and a nuclear polarization of 0.86{+-}0.05.

Authors:
; ;  [1]
  1. Univ. of Wisconsin, Madison, WI (United States) [and others
Publication Date:
OSTI Identifier:
243739
Report Number(s):
CONF-9304297-
Journal ID: BAPSA6; ISSN 0003-0503; TRN: 96:002199-0252
Resource Type:
Journal Article
Journal Name:
Bulletin of the American Physical Society
Additional Journal Information:
Journal Volume: 38; Journal Issue: 2; Conference: 1993 joint meeting of the American Physical Society and the American Association of Physics Teachers, Washington, DC (United States), 12-15 Apr 1993; Other Information: PBD: Apr 1993
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; HYDROGEN; BEAM PRODUCTION; ATOMIC BEAMS; STERN-GERLACH EXPERIMENT; POLARIZED BEAMS; TARGETS; ACCELERATORS

Citation Formats

Roberts, A.D., Elmer, P., and Wise, T. Production of polarized hydrogen with an improved atomic beam source. United States: N. p., 1993. Web.
Roberts, A.D., Elmer, P., & Wise, T. Production of polarized hydrogen with an improved atomic beam source. United States.
Roberts, A.D., Elmer, P., and Wise, T. Thu . "Production of polarized hydrogen with an improved atomic beam source". United States.
@article{osti_243739,
title = {Production of polarized hydrogen with an improved atomic beam source},
author = {Roberts, A.D. and Elmer, P. and Wise, T.},
abstractNote = {A source of atomic beams of polarized H and D will be described. High-field tapered permanent magnet sixpoles (1.5 T) are used for Stern-Gerlach separation of the atoms. The beam is cooled with a liquid nitrogen cooled dissociator nozzle. Studies of gas scattering and dissociator output were combined with calculations of atomic trajectories through sixpole magnets to find the optimum source design. The total hydrogen beam intensity is 8.6x10{sup 16} atoms/s in two hyperfine spin states. The measured beam profile and intensity agree with calculations. The beam intensity measured through a 1 cm diameter, 13 cm magnet is (6.7 {+-}0.1)x10{sup 16} atoms/s. A hydrogen beam in a single spin state has also been made with an intensity of (3.6{+-}0.1)x10{sup 16} atoms/s and a nuclear polarization of 0.86{+-}0.05.},
doi = {},
journal = {Bulletin of the American Physical Society},
number = 2,
volume = 38,
place = {United States},
year = {1993},
month = {4}
}