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2016 Fiscal Year Final Research Report

A study on infrared emission of liquid xenon scintillator

Research Project

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Project/Area Number 25287055
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionYokohama National University

Principal Investigator

NAKAMURA Shogo  横浜国立大学, 大学院工学研究院, 准教授 (50212098)

Co-Investigator(Renkei-kenkyūsha) TAWARA Hiroko  高エネルギー加速器研究機構, 放射線科学センター, 准教授 (30188453)
HARUYAMA Tomiyoshi  高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (90181031)
Research Collaborator OHYAMA Shuhei  
YOSHIDA Mao  
HAMANISHI Ryo  
NAGAI Masaya  
GOKUDEN Takashi  
ONO Hayato  
HINO Yota  
TAKEDA Hiroki  
YAGI Daisuke  
NAKAMURA Susumu  
KANOU Yoshiki  
ADACHI Yuya  
MIHARA Satoshi  
KASAMI Katsuyu  
SASAKI Shinichi  
FUJII Keiko  
MURAYAMA Ikuko  
Project Period (FY) 2013-04-01 – 2017-03-31
Keywords液体キセノン / シンチレータ / 赤外発光
Outline of Final Research Achievements

Emission spectrum of liquid xenon scintillator was measured in the near-infrared region below 1,700 nm in addition to the vacuum-ultraviolet region. The liquid xenon was excited by gamma-rays from a radioactive source, and the near-infrared scintillation photons coincident with those in the vacuum-ultraviolet region were measured using a photomultiplier and a monochrometer. As a result, the emission reported around 1,300 nm was not observed, but instead significant amount of emission was newly recognized in a wavelength region between 700 and 1,100 nm. The integrated number of photons emitted in the region was about 17±5 % relative to that in the vacuum-ultraviolet region. The near-infrared emission is consistent to be due to some transitions between excited states of atomic xenon.

Free Research Field

宇宙素粒子実験,放射線計測

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Published: 2018-03-22  

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