Highly-charged heavy-ion production with short pulse lasers

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This MathCAD document describes a possible approach using a PW -class short pulse laser to form a useful number (10{sup 12}) of high and uniform charge state ions with low ion temperature (<< 100 eV) and low momentum spread ({delta}p{sub z}/p, < 10{sup -4} ) for injection into heavy-ion fusion accelerators. As a specific example, we consider here Xenon{sup +26}, which has an ionization energy E{sub i} {approximately} 860 eV for the 26th electron, and a significantly higher ionization potential of 1500 eV for the 27th electron because of the M-shell jump. The approach considered here may be used for ... continued below

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24 p.; Other: FDE: PDF; PL:

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Logan, G.; Bitmire, T.; Perry, M.; Anderson, O. & Kuehl, T. January 27, 1998.

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Description

This MathCAD document describes a possible approach using a PW -class short pulse laser to form a useful number (10{sup 12}) of high and uniform charge state ions with low ion temperature (<< 100 eV) and low momentum spread ({delta}p{sub z}/p, < 10{sup -4} ) for injection into heavy-ion fusion accelerators. As a specific example, we consider here Xenon{sup +26}, which has an ionization energy E{sub i} {approximately} 860 eV for the 26th electron, and a significantly higher ionization potential of 1500 eV for the 27th electron because of the M-shell jump. The approach considered here may be used for other ion species as well. The challenge is not simply to produce high charge states with a laser (the ITEP group [Sharkov] have used long pulse CO{sub 2} lasers to create many charge states of chromium up to helium-like Cr{sup +25} by collisional ionization at high Te), nor just to create such high charge states more selectively by field (tunneling) ionization at higher intensities and shorter pulses. Rather, the challenge is to create a selected uniform high charge state, in useful numbers, while keeping the ion temperature and momentum spread small, and avoiding subsequent loss of ion charge state due to recombination and charge-exchange with background gas atoms during extraction into a useful low emittance beam.

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24 p.; Other: FDE: PDF; PL:

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OSTI as DE98057741

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  • High Power Laser Study Group workshop, Darmstadt (Germany), 29-30 Jan 1998

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  • Other: DE98057741
  • Report No.: UCRL-JC--129617
  • Report No.: CONF-980159--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 304559
  • Archival Resource Key: ark:/67531/metadc686641

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  • January 27, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 23, 2016, 4:20 p.m.

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Logan, G.; Bitmire, T.; Perry, M.; Anderson, O. & Kuehl, T. Highly-charged heavy-ion production with short pulse lasers, article, January 27, 1998; California. (digital.library.unt.edu/ark:/67531/metadc686641/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.