InP solid state detector for measurement of low energy solar neutrinos

Yoshiyuki Fukuda, Toshiyuki Izawa, Yusuke Koshio, Shigetaka Moriyama, Toshio Namba, Masato Shiozawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


A large volume radiation detector using a semi-insulating Indium Phosphide (InP) wafer has been developed for Indium Project on Neutrino Observation for Solar interior (IPNOS) experiment. We have achieved the volume of 20 mm 3, and this is world largest one among InP detectors which observed γ's at hundred keV region. In spite of the depletion layer, most of charge generated by electron hole pair production are collected by an induction, and the charge collection efficiency and the energy resolution are obtained by 60% and 25%, respectively. We measured actual backgrounds related to 115In β decay, and no significant background was found.

Original languageEnglish
Pages (from-to)460-462
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
Publication statusPublished - Nov 1 2010
Externally publishedYes


  • Neutrino oscillation
  • Solar neutrinos
  • Stellar evolution

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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