Muon capture reaction on Mo100 to study the nuclear response for double-β decay and neutrinos of astrophysics origin

I. H. Hashim, H. Ejiri, T. Shima, K. Takahisa, A. Sato, Y. Kuno, K. Ninomiya, N. Kawamura, and Y. Miyake
Phys. Rev. C 97, 014617 – Published 30 January 2018

Abstract

Ordinary muon capture (OMC) on enriched Mo100 isotopes was studied for the first time to investigate neutrino nuclear responses for neutrinoless double-β decays and supernova neutrino nuclear interactions. Muon capture on Mo100 proceeds mainly as Mo100(μ,xn)Nb100x with x being the number of neutrons emitted from negative muon capture. The Nb isotope mass distribution was obtained by measuring delayed γ rays from radioactive Nb100x. By using the neutron emission model after the muon capture, the neutrino response (the strength distribution) for OMC was derived. The OMC strength distribution shows a giant resonance (GR) at the peak energy around 11–14 MeV, suggesting the concentration of the OMC strength at the muon GR region.

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  • Received 30 July 2017
  • Revised 7 November 2017

DOI:https://doi.org/10.1103/PhysRevC.97.014617

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

I. H. Hashim*

  • Physics Department, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia; Department of Physics, Osaka University, 560-0043 Toyonaka-shi, Osaka, Japan; and Research Center for Nuclear Physics, Osaka University, 567-0047 Ibaraki-shi, Osaka, Japan

H. Ejiri, T. Shima, and K. Takahisa

  • Research Center for Nuclear Physics, Osaka University, 567-0047 Ibaraki-shi, Osaka, Japan

A. Sato and Y. Kuno

  • Department of Physics, Osaka University, 560-0043 Toyonaka-shi, Osaka, Japan

K. Ninomiya

  • Department of Chemistry, Osaka University, 560-0043 Toyonaka-shi, Osaka, Japan

N. Kawamura and Y. Miyake

  • Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan and Muon Science Section, Materials and Life Science Division, Japan Proton Accelerator Research Complex (J-PARC), Tokai, Ibaraki 319-1195, Japan

  • *izyan@utm.my
  • ejiri@pop07.odn.ne.jp

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Issue

Vol. 97, Iss. 1 — January 2018

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