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

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

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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

Inventors:: Hershcovitch, A.

Issue Date:: 1984-02-13

OSTI Identifier:: 5997884

Application Number:: ON: TI85006362

Assignee:: Dept. of Energy EDB-85-040853

DOE Contract Number:: AC02-76CH00016

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 74 ATOMIC AND MOLECULAR PHYSICS; 640304* - Atomic, Molecular & Chemical Physics- Collision Phenomena

Citation Formats


                    Hershcovitch, A. Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of cold negative ions.  United States: N. p., 1984. 
        Web.

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                    Hershcovitch, A. Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of cold negative ions.  United States.

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                    Hershcovitch, A. Mon .  
        "Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of cold negative ions".  United States.

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@article{osti_5997884,

  title        = {Production of intense negative hydrogen beams with polarized nuclei by selective neutralization of cold negative ions},

  author       = {Hershcovitch, A.},

  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},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1984},

  month        = {2}

}

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

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A process is described for selective neutralization of H/sup -/ ions in a magnetic field to produce an intense negative hydrogen ion beam with spin polarized protons, comprising: providing a multi-ampere beam of H/sup -/ ions; providing a beam of laser light, any photon of which has sufficient energy to photodetach one electron from any one of the H/sup -/ ions; providing a uniform solenoidal magnetic field around a portion of the length of the beam of H/sup -/ ions to effectively spin polarize the H/sup -/ ions in the beam, thereby to produce a first group of ions withmore »« less
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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 ismore »« less
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A novel scheme is proposed. This method is based on selective neutralization by laser of negative hydrogen ions in a magnetic field. This selectivity is based on the fact that the final state of the neutralized atom depends on nuclear polarization in the magnetic field. A two-scenario approach is to be followed: one in which the resulting neutral atom is in the ground state, and in the other the neutral atom is in the n = 2 level. Limiting factors are discussed. The main advantages of this scheme are the availability of multi-ampere negative ion sources and the possibility tomore »« less
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