New Approach for Measuring the (n,γ) Cross Section of a Nucleus by a Few keV Neutron(Nuclear Physics)

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概要

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• We have for the first time determined with high precision the energy spectrum of low-energy neutrons (E_n<10keV) which are produced in the ^7Li(p,n)^7Be reaction, by detecting γ-rays of the ^<197>Au(n,γ)^<198>Au reaction whose cross section is known. An anti-Compton NaI(Tl) spectrometer played an essential role in detecting the γ-rays with a good signal to noise ratio by discriminating large background due to thermalized neutrons in the measurement room. The low energy neutrons thus derived were successfully used to measure the ^<62>Ni(n,γ)^<63>Ni reaction cross section. The present low energy neutrons could be extensively used for cross section measurements for neutron capture reactions and elastic scatterings from nuclei of nuclear astrophysical interests.

• 社団法人日本物理学会の論文
• 2005-11-15

著者

• IGASHIRA Masayuki

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• OHSAKI Toshiro

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• Ohsaki T

  Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology

• Ohsaki Toshiro

  Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology

• Igashra Masayuki

  Tokyo Institute Of Technology

• Igashira Masayuki

  Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology

• Tomyo Atsushi

  Research Center For Nuclear Physics Osaka University

• Nagai Yasuki

  Research Center For Nuclear Physics Osaka University

• Shima Tatsushi

  Research Center For Nuclear Physics Osaka University

• Shibata M

  Radioisotope Research Center Nagoya University

• SEGAWA Mariko

  Research Center for Nuclear Physics, Osaka University

• TEMMA Yasuyuki

  Research Center for Nuclear Physics, Osaka University

• MASAKI Tomohiro

  Research Center for Nuclear Physics, Osaka University

• NISHIYAMA Jun

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• Nishiyama Jun

  Research Laboratory For Nuclear Reactors Tokyo Institute Of Technology

• Temma Yasuyuki

  Research Center For Nuclear Physics Osaka University

• Masaki Tomohiro

  Research Center For Nuclear Physics Osaka University

• SHIMA Tatsushi

  Research Center for Nuclear Physics, Osaka University

• TOMYO Atsushi

  Research Center for Nuclear Physics, Osaka University

• NAGAI Yasuki

  Research Center for Nuclear Physics, Osaka University

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