分类： 物理学 >> 核物理学 提交时间： 2023-08-29
摘要： The sensitivity of an experiment to detect the Majorana neutrino mass via neutrinoless double beta decay (0) strongly depends on the rate of background events that can mimic this decay. One major source of this background is the radioactive emissions from the laboratory environment. In our study, we focused on assessing the background contributions from environmental gamma rays, neutrons, and underground muons to the Jinping bolometric demonstration experiment. This experiment uses an array of lithium molybdate crystal bolometers to probe the potential 0 decay of the 100Mo isotope at the China Jinping Underground Laboratory. We also evaluated the shielding effectiveness of the experimental setup through an attenuation study. Our simulations indicate that the combined background from environmental gamma rays, neutrons, and muons in the relevant 100Mo 0 Q-value region can be reduced to approximately 0.003 cts/kg/keV/yr.
分类： 物理学 >> 核物理学 提交时间： 2023-05-16
摘要： N/A
分类： 物理学 >> 核物理学 提交时间： 2023-05-16
摘要： A new approach that using polarized photon-gluon collisions reported by STAR Collaboration is used to do tomography of the ultrarelativistic nucleus.The collision can be treated as a double-slit experiment at fermi scale, and solves a mystery last over 20 years in extracting the nuclear radius via vector meson photoproduction.
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