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Volumn 315, Issue 5815, 2007, Pages 1092-1095

A route to the brightest possible neutron source?

Author keywords

[No Author keywords available]

Indexed keywords

DEUTERIUM; TRITIUM;

EID: 33847318758     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1127185     Document Type: Review
Times cited : (58)

References (26)
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    • ESS Science Case, http://neutron.neutron-eu.net/n_ess.
    • ESS Science Case
  • 3
    • 33847279805 scopus 로고    scopus 로고
    • European X-ray Free-Electron Laser
    • European X-ray Free-Electron Laser, www.xfel.net/XFELpresse/en/index. html.
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    • 0142072880 scopus 로고    scopus 로고
    • R. Kodama et al., Nature 418, 933 (2002).
    • (2002) Nature , vol.418 , pp. 933
    • Kodama, R.1
  • 15
    • 33847336879 scopus 로고    scopus 로고
    • Neutrons produced in a fission or fusion process are in thermal equilibrium with the nucleus and have energies in the megaelectron volt range and wavelengths that are commensurate with the size of the nucleus, ∼10 -15 m. These neutrons are of little or no use for studies of condensed matter, where the energy scales are millielectron volts and the wavelengths needed are on the order of angstroms ∼10-10 m
    • -10 m).
  • 16
    • 42449088263 scopus 로고    scopus 로고
    • LA-CP-05-0359, Los Alamos National Laboratory, NM, April
    • The MCNPX Version 2.5.0 User's Manual (LA-CP-05-0359, Los Alamos National Laboratory, NM, April 2005).
    • (2005) The MCNPX Version 2.5.0 User's Manual
  • 17
    • 33847327363 scopus 로고    scopus 로고
    • Monte Carlo neutron transport code simulations (16) of the conceptual design show that it will be possible to moderate the 14-MeV neutrons to 1 eV, by using water, with an efficiency of ∼10-7 n eV-1 Sr-1 cm-2 per fast neutron (the probability of a source neutron being thermalized and leaving one of the moderator faces, This is less by a factor of about 20 than current optimized spallation source designs, which typically have efficiencies of ∼2 × 10-6 n eV-1 Sr-1 cm1 per fast neutron, as is the case for the ISIS target station. ISIS produces ∼5 × 1014 fast neutrons per pulse and hence delivers ∼109 n eV-1 Sr-1 cm-2 per pulse (at 1 eV) from each of the moderator faces. The fusion target will produce in excess of 1019 neutrons per pulse and thus around 1012 n eV-1 Sr-1 cm
    • -2 per pulse, or some 1000 times as much as the flux per pulse from an equivalent ISIS moderator.
  • 21
    • 0021475868 scopus 로고
    • J. Coen, Nucl. Mater. 133-134, 46 (1985).
    • (1985) Nucl. Mater , vol.133-134 , pp. 46
    • Coen, J.1
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    • ITER project
    • ITER project, www.iter.org.
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    • 33847281862 scopus 로고    scopus 로고
    • Fusion Eng. Design 55 (2-3) (2001).
    • (2001) Fusion Eng. Design , vol.55 , Issue.2-3
  • 25
    • 33847335956 scopus 로고    scopus 로고
    • Although magnetically confined fusion reactors such as ITER have integrated neutron fluences comparable to the laser-driven reactor of ∼5 × 1014 n cm-2 s-1, because ITER is steady-state, it would offer no advantage over current sources of neutrons
    • -1, because ITER is steady-state, it would offer no advantage over current sources of neutrons.
  • 26
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    • discussions about cooling limits in cryogenic moderators, and two anonymous reviewers for perceptive and constructive comments on the manuscript
    • We thank M. Simon from ISIS for helpful discussions about cooling limits in cryogenic moderators, and two anonymous reviewers for perceptive and constructive comments on the manuscript.
    • Simon from ISIS for helpful
    • We thank, M.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.