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Title: Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of negative ions

Abstract

A process for selectively neutralizing H.sup.- ions in a magnetic field to produce an intense negative hydrogen ion beam with spin polarized protons. Characteristic features of the process include providing a multi-ampere beam of H.sup.- ions that are intersected by a beam of laser light. Photodetachment is effected in a uniform magnetic field that is provided around the beam of H.sup.- ions to spin polarize the H.sup.- ions and produce first and second populations or groups of ions, having their respective proton spin aligned either with the magnetic field or opposite to it. The intersecting beam of laser light is directed to selectively neutralize a majority of the ions in only one population, or given spin polarized group of H.sup.- ions, without neutralizing the ions in the other group thereby forming a population of H.sup.- ions each of which has its proton spin down, and a second group or population of H.sup.o atoms having proton spin up. Finally, the two groups of ions are separated from each other by magnetically bending the group of H.sup.- ions away from the group of neutralized ions, thereby to form an intense H.sup.- ion beam that is directed toward a predetermined objective.

Inventors:
 [1]
  1. Mount Sinai, NY
Issue Date:
Research Org.:
Associated Universities, Inc., Upton, NY (United States)
OSTI Identifier:
866198
Patent Number(s):
4654183
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
G - PHYSICS G21 - NUCLEAR PHYSICS G21K - TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
production; intense; negative; hydrogen; beams; polarized; nuclei; selective; neutralization; process; selectively; neutralizing; magnetic; field; produce; beam; spin; protons; characteristic; features; providing; multi-ampere; intersected; laser; light; photodetachment; effected; uniform; provided; polarize; populations; respective; proton; aligned; opposite; intersecting; directed; neutralize; majority; population; forming; atoms; finally; separated; magnetically; bending; neutralized; form; predetermined; objective; negative hydrogen; uniform magnetic; magnetic field; laser light; selectively neutralizing; intense negative; /376/250/976/

Citation Formats

Hershcovitch, Ady. Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of negative ions. United States: N. p., 1987. Web.
Hershcovitch, Ady. Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of negative ions. United States.
Hershcovitch, Ady. Thu . "Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of negative ions". United States. https://www.osti.gov/servlets/purl/866198.
@article{osti_866198,
title = {Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of negative ions},
author = {Hershcovitch, Ady},
abstractNote = {A process for selectively neutralizing H.sup.- ions in a magnetic field to produce an intense negative hydrogen ion beam with spin polarized protons. Characteristic features of the process include providing a multi-ampere beam of H.sup.- ions that are intersected by a beam of laser light. Photodetachment is effected in a uniform magnetic field that is provided around the beam of H.sup.- ions to spin polarize the H.sup.- ions and produce first and second populations or groups of ions, having their respective proton spin aligned either with the magnetic field or opposite to it. The intersecting beam of laser light is directed to selectively neutralize a majority of the ions in only one population, or given spin polarized group of H.sup.- ions, without neutralizing the ions in the other group thereby forming a population of H.sup.- ions each of which has its proton spin down, and a second group or population of H.sup.o atoms having proton spin up. Finally, the two groups of ions are separated from each other by magnetically bending the group of H.sup.- ions away from the group of neutralized ions, thereby to form an intense H.sup.- ion beam that is directed toward a predetermined objective.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

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