Shinya Hohara

A simple method of energy calibration for thin plastic scintillator

A thin plastic scintillator is used as a trigger counter of charged particle spectrometers. Since its Compton edge is not clear, it is difficult to check up the thin plastic scintillator counters with a standard gamma-ray source. In this paper a simple method is proposed to determine the Compton edge and the energy resolution of the thin plastic scintillator by fitting the simulated spectrum to the measured. The simulated spectrum was made with a Monte Carlo program considering geometries of the plastic scintillator. This technique was examined with the plastic scintillator having thickness of 2 mm to 10 mm.

Study of Proton and Deuteron Spectra from Proton Induced Reactions at Intermediate Energies

Intermediate-energy nucleon-nucleus interactions were investigated in order to achieve a more comprehensive understanding of spallation reaction and heavier fragments productions. Measurements of proton and deuteron production reactions for 300- and 392 MeV proton incidence were carried out at RCNP ring-cyclotron facility. Inclusive 12C(p, p′x) and 12C(p, dx) spectra at 300 MeV were measured in a wide energy range and compared with two theoretical calculations: the quantum molecular dynamics model and the intranuclear cascade model. The calculations of the INC model were in good agreement with the experimental results in the quasifree region. The deuteron production cross sections calculated by the QMD model were much smaller than the ones obtained by the measurement. The cause of this discrepancy was discussed in terms of a deuteron knockout process.

Photodisintegration of {sup 80}Se: Implications for the s-process branching at {sup 79}Se

Photoneutron cross sections were measured for

80Se(γ,n)79Se cross section and s‐process branching at 79Se

^{80}\mathrm{Se}

Proton Production Cross Sections for Reactions Induced by 300‐ and 392‐MeV Protons

immediately above the neutron separation energy with quasimonochromatic

Proton production cross sections for reactions induced by 300- and 392-mev protons

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Partial photoneutron cross sections for the isomeric state 180Tam.

-ray beams to experimentally constrain the

Recent progress in generation and application of AIST laser-Compton gamma-ray beam

E1

Deuteron-production double-differential cross sections for 300- and 392-MeV proton-induced reactions deduced from experiment and model calculation

\ensuremath{\gamma}