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Konishi, Suzuka*; Minagawa, Hideaki*; Majima, Takuya*; Imai, Makoto*; Saito, Manabu*; Hirade, Tetsuya; Tsuchida, Hidetsugu*
no journal, ,
To clarify the damage behavior under ion irradiation in quartz glass, Age-Momentum Correlation measurement that is a coincidence measurement of positron annihilation lifetime and annihilation gamma ray Doppler broadening was performed under 2 MeV proton irradiation. From the change in momentum distribution of electrons involved in positron annihilation in voids of the quartz glass, flux dependence of damage behavior could be detected.
Ueda, Daisuke*; Konishi, Suzuka*; Minagawa, Hideaki*; Hirade, Tetsuya; Tsuchida, Hidetsugu*
no journal, ,
Damaged conditions under irradiation such as ion beams irradiation are transient and unstable. Understanding of this transient damage state is important to clarify the process from damage generation to stabilization. We are developing Age-MOmentum Correlation (AMOC) measurement system by 
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coincident measurement to investigate the triplet positronium (o-Ps) reactions as a probe of reactive species. From the correlation between "positron annihilation time" and "momentum of electron / positron at pair annihilation" obtained by AMOC measurement, it is possible to investigate the process of o-Ps reactions. We report on AMOC measurement system newly constructed by digital method.