Effect of unclear interaction loss of protons in the response of CsI(Tl) scintillator

Nuclear interaction loss of protons in a CsI(Tl) scintillator has been measured at 160 MeV by direct exposure of ⊿E-E counter telescopes to proton beams delivered to the B beam line in the The Svedberg Laboratory (TSL). The experimental result shows a good agreement with a Monte Carlo calculation using the PHITS code, and the PHITS calculation is validated. The correction for proton loss in the CsI(Tl) response is estimated for proton energies up to 200 MeV on the basis of the PHITS calculation. The present correction method is applied to the data analysis of 175 MeV neutron induced proton production for carbon measured at the MEDLEY facility in TSL

CsI(Tl)シンチレータ応答に対する陽子の核反応損失

Nuclear interaction loss of protons in a CsI(Tl) scintillator has been measured at 160 MeV by direct exposure of ⊿E-E counter telescopes to proton beams delivered to the B beam line in the The Svedberg Laboratory (TSL). The experimental result shows a good agreement with a Monte Carlo calculation using the PHITS code, and the PHITS calculation is validated. The correction for proton loss in the CsI(Tl) response is estimated for proton energies up to 200 MeV on the basis of the PHITS calculation. The present correction method is applied to the data analysis of 175 MeV neutron induced proton production for carbon measured at the MEDLEY facility in TSL

Coulomb Excitation of Proton-rich N = 80 Isotones at HIE-ISOLDE

A projectile Coulomb-excitation experiment was performed at the radioactive ion beam facility HIE-ISOLDE at CERN. The radioactive 140Nd and 142Sm ions were post accelerated to the energy of 4.62 MeV/A and impinged on a 1.45 mg/cm2-thin 208Pb target. The γ rays depopulating the Coulomb-excited states were recorded by the HPGe-array MINIBALL. The scattered charged particles were detected by a double-sided silicon strip detector in forward direction. Experimental γ-ray intensities were used for the determination of electromagnetic transition matrix elements. Preliminary results for the reduced transition strength of the B(M1 23+ to 21+)=0.35(19) μN2 of 140Nd and a first estimation for 142Sm have been deduced using the Coulomb-excitation calculation software GOSIA. The 23+ states of 140Nd and 142Sm show indications of being the main fragment of the proton-neutron mixed-symmetry 21, ms+ state.peerReviewe