谈起Birks这个品牌可能对于很多中国消费者还稍显陌生。这个已有百余年历史的首饰品牌在欧美可谓家喻户晓。前不久,Birks落户了位于前门地区的英园(The British House),落户仪式当天,我与Birks品牌大使相约了本次采访,近距离了解了这个...谈起Birks这个品牌可能对于很多中国消费者还稍显陌生。这个已有百余年历史的首饰品牌在欧美可谓家喻户晓。前不久,Birks落户了位于前门地区的英园(The British House),落户仪式当天,我与Birks品牌大使相约了本次采访,近距离了解了这个历史悠久且大有来头的品牌。展开更多
Based on the analysis of experimental data, tbe semiemperical formulas of the gasgain in proportional and limited proportional regions are derived. A model of gas multipli-cation in proportional region is proposed. Th...Based on the analysis of experimental data, tbe semiemperical formulas of the gasgain in proportional and limited proportional regions are derived. A model of gas multipli-cation in proportional region is proposed. The saturation formula of the energy response inlimited proportional region which is different from the Birks law is proposed. The effectsof primary ionization and track orientation are discussed.展开更多
Background The linear alkylbenzene has been recently used as the solvent of liquid scintillator by several neutrino experiments.The nonlinear energy response induced by the ionization quenching is critical in this kin...Background The linear alkylbenzene has been recently used as the solvent of liquid scintillator by several neutrino experiments.The nonlinear energy response induced by the ionization quenching is critical in this kind of detectors.An empirical model proposed by Birks is commonly used to describe the quenching effect;however,recently,the parameter kB in the model is found to be particle dependent.Purpose To improve the understanding of proton quenching in LS detectors.Methods A 14 MeV D–T compact neutron generator is deployed which can provide recoil protons with kinetic energies ranging from 0.5 to 13 MeV in LS.Results The parameter kB is extracted by fitting the data to the Birks’law prediction with careful examination of systematic uncertainties.Conclusion The measurement will contribute to the in-depth understanding of the energy nonlinearity in liquid scintillator detectors.展开更多
文摘Based on the analysis of experimental data, tbe semiemperical formulas of the gasgain in proportional and limited proportional regions are derived. A model of gas multipli-cation in proportional region is proposed. The saturation formula of the energy response inlimited proportional region which is different from the Birks law is proposed. The effectsof primary ionization and track orientation are discussed.
基金National Natural Science Foundation of China(Grant Nos.11390381 and 11225525).
文摘Background The linear alkylbenzene has been recently used as the solvent of liquid scintillator by several neutrino experiments.The nonlinear energy response induced by the ionization quenching is critical in this kind of detectors.An empirical model proposed by Birks is commonly used to describe the quenching effect;however,recently,the parameter kB in the model is found to be particle dependent.Purpose To improve the understanding of proton quenching in LS detectors.Methods A 14 MeV D–T compact neutron generator is deployed which can provide recoil protons with kinetic energies ranging from 0.5 to 13 MeV in LS.Results The parameter kB is extracted by fitting the data to the Birks’law prediction with careful examination of systematic uncertainties.Conclusion The measurement will contribute to the in-depth understanding of the energy nonlinearity in liquid scintillator detectors.
