ICANS-VI INTERNATIONAL COLLABORATION ON ADVANCED NEUTRON SOURCES June 27 - July 2, 1982 MEASURED AND CALCULATED NEUTRON YIELDS FOR 100 MeV PROTONS ON THICK TARGETS OF Pb AND Li
نویسندگان
چکیده
The neutron yield per proton from thick targets of lead and lithium irradiated with 100 MeV protons has been measured and calculated. The water bath method was used to measure the neutron production, and a Faraday cup for the the beam current determination. Measured yields are 0.343 + 0.021 for lead and 0.123 2 0.007 for lithium. Corresponding yields calculated with the nucleon-meson transport code NMTC are 0.363 + 0.002 and 0.160 f 0.001. Measured and calculated thermal neutron distributions in the water bath are also compared.
منابع مشابه
Polarization Bremsstrahlung in Thick Targets Produced by Continuous Beta Particles
Bremsstrahlung spectral photon distributions produced by continuous beta particles of beta emitter 147Pm and 45Ca in thick targets studied in a photon energy region 10-30 keV. The bremsstrahlung spectral photon distribution measured with X-PIPS Si (Li) detector. The experimental results were compared with the theoretical bremsstrahlung distribution obtained from ordinary bremsstrahlung (OB) the...
متن کاملIN-SITU THIN FILM GROWTH OF PbTiO3 BY MULTI TARGET SPUTTERING
The in-situ reactive sputter deposition of PbTiO3 on Pt/Ti/SiO2/Si from two metallic targets was investigated. A minimal lead oxide flux of two to three times the titanium oxide flux is needed in order to obtain stoichiometric films with the perovskite structure. For higher fluxes, the Pb/Ti ratio in the film stays at the stoichiometric value 1; the orientation changes from random to <100>; and...
متن کاملConcentrations, enrichment and predominant sources of Sb and other trace elements in size classified airborne particulate matter collected in Tokyo from 1995 to 2004.
APM was collected and trace elements existing in the particles were monitored since May 1995 in this study. APM sample was collected separately by size (d < 2 microm, 2-11 microm and >11 microm) on the roof of the university building (45 m above ground) in the campus of Faculty of Science and Engineering, Chuo University, Tokyo, Japan, using an Anderson low volume air sampler. The collected sam...
متن کاملComparison of Fertilizer Nitrogen Availability, Nitrogen Immobilization, Substrate Carbon Dioxide Efflux, and Nutrient Leaching in Peat-lite, Pine Bark, and Pine Tree Substrates
The objective of this study was to compare substrate solution nitrogen (N) availability, N immobilization, and nutrient leaching in a pine tree substrate (PTS), peatlite (PL), and aged pine bark (PB) over time under greenhouse conditions. Pine tree substrate was produced from loblolly pine logs (Pinus taeda L.) that were chipped and hammer-milled to a desired particle size. Substrates used in t...
متن کاملThoron Lung Dosimetry
The lung dose contributed from thoron (Rn) and its progeny was usually neglected in the dose assessment because of the generally low concentrations. Recently, increased concentrations of Rn and its progeny were measured in the traditional residential dwellings in China, in dwellings in India and in other countries. The potential alpha energy concentration contributed from Rn and its decay produ...
متن کامل