Strong n-α Correlations Observed in Muon Catalyzed t-t Fusion Reactions
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概要
- 論文の詳細を見る
We conducted X-ray and neutron measurements associated with muon catalyzed t-t fusion process using high-purity tritium solid and liquid targets. We observed Kα X-rays originating from muonic helium atoms (μα) formed in the muon sticking process : t + t + μ → μα + η + η + Q (11.33 MeV), and determined the Doppler shift broadening width which gave the average value of kinetic energy distribution of μα atoms in the target. We estimated then the maximum kinetic energy of μα atoms, which agreed well with the calculated kinetic energies assuming strong n-α correlations (sequential neutron decay through intermediate ^5He resonances) in the three-particle decay at the exit channel of t+t reactions. In the neutron measurement, the t-t fusion neutrons showed a continuous energy distribution with the maximum energy at 9 MeV. The obtained shape of neutron-energy distribution was analyzed and reproduced well by a simple model of two neutron-energy components, where we also assumed strong n-α correlations in the three-particle decay. Both the average kinetic energy of recoiling μα atoms and the characteristic feature of the observed neutron-energy spectrum supported a possibility of strong n-α correlations at the exit channel of t+t reactions.
- 理論物理学刊行会の論文
- 2004-07-30
著者
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IWASAKI M.
Muon Science Laboratory, RIKEN
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Kato M.
Department of Cardiovascular Medicine, University of Tokyo
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Kudo K
Quantum Radiation Division Metrology Institute Of Japan National Institute Of Advanced Industrial Sc
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Eaton G.
Isis Rutherford Appleton Laboratory
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MATSUZAKI T.
Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN)
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ISHIDA K.
Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN)
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NAKAMURA S.
Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN)
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MATSUDA Y.
Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN)
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TANASE M.
Department of Radioisotopes, Japan Atomic Energy Research Institute
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SUGAI H.
Department of Radioisotopes, Japan Atomic Energy Research Institute
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KUDO K.
Quantum Radiation Division, Metrology Institute of Japan, National Institute of Advanced Industrial
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TAKEDA N.
Quantum Radiation Division, Metrology Institute of Japan, National Institute of Advanced Industrial
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NAGAMINE K.
Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN)
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KAWAMURA N.
Muon Science Laboratory, The Institute of Physical and Chemical Research (RIKEN)
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IMAO H.
Faculty of Science, University of Tokyo
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EATON G.
ISIS, Rutherford Appleton Laboratory
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Imao H.
Faculty Of Science University Of Tokyo
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Nagamine K.
Muon Science Laboratory The Institute Of Physical And Chemical Research (riken):meson Science Labora
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Sugai H.
Department Of Radioisotopes Japan Atomic Energy Research Institute
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Tanase M.
Department Of Radioisotopes Japan Atomic Energy Research Institute:(present Address)radiation Application Development Association
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TANASE M.
Department of Radioisotopes, Japan Atomic Energy Research Institute:(Present address)Radiation Application Development Association
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