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We have been studying scintillation properties of He/Xe, such as luminescence spectra, time profile and scintillation yield. Furthermore we have been measuring ionization yields and studying the scintillation mechanism. From the measurements of luminescence spectra, it became clear that the scintillation photons in He/Xe mixture were emitted in the wavelength region of 150-200 nm. The time profiles...
We have been studying scintillation mechanism in helium mixed with xenon. In this study, the time profiles and the luminescence spectra of scintillation in the mixture were measured using a PMT sensitive to photons with wavelength of 115-300nm. Scintillation and ionization yields in He/Xe were measured simultaneously. The time profiles and luminescence spectra depend on not only the xenon pressure...
The determination of W, an average energy to produce an ion pair, for heavy ions in gases at atmospheric pressures has been made using heavy-ion beams from an accelerator. The values of W were measured for He2+ and C6+ (<6 MeV/n) in propane-base tissue-equivalent gases of the pressures of 500 to 760 Torr as a function of the energy of ions. For C6+, the energy dependence of W was clearly observed,...
Eleetroless plated CoB films were plated in a bath with dimethylamineborane (DMAB) as a reducing agent. The magnetic properties of films changed widely with changes in the concentration of the complexing agent in the bath, such as ammonium sulfate or sodium tartrate. Film with the lowest coercivity was obtained from the bath containing 0.3 mol/dm3 of sodium sulfate and 0.55 mol/dm3 of sodium tartrate...
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