講座主題：Migdal effect in semiconductor detectors
專(zhuān)家姓名：梁正良
工作單位：北京化工大學(xué)
講座時(shí)間：2022年9月30日 10:00-11:30
講座地點(diǎn)：騰訊會(huì)議169-714-282
主辦單位：煙臺(tái)大學(xué)物理與電子信息學(xué)院
內(nèi)容簡(jiǎn)介：
As the sensitivities of various conventional dark matter detectors approach the“neutrinofloor”, physicists begin to shift their focus to even lighter dark matter candidates (in sub-GeV mass regime). Theoretically, the Migdal effect induced by the dark matter inside the detector offers a new avenue for detecting dark matter particles in the sub-GeV mass range. While there has existed a well-established framework to describe the Migdal effect in isolated atoms, a satisfactory treatment of the Migdal effect in semiconductors has not yet been established. Our recent efforts have made some progress in two aspects: (1) to establish a complete theoretical framework for the Migdal effect in solids, covering from the low- to the high- energy regime; (2) to accordingly establish a reliable computation method based on well- established first-principles computational tools. These works are not only theoretically motivated, but also will pave the way for better utilizing the Migdal effect in semiconductor targets for the dark matter detection.
主講人介紹：
梁正良博士，北京化工大學(xué)數(shù)理學(xué)院講師。2006年畢業(yè)于南京大學(xué)，2009年在 山西大學(xué)取得碩士學(xué)位，2014年在中科院理論物理所取得博士學(xué)位。先后與中科院 高能物理所與北京應(yīng)用物理與計(jì)算數(shù)學(xué)所從事博士后研究。近年來(lái)研究興趣主要集 中在暗物質(zhì)粒子探測(cè)的相關(guān)理論問(wèn)題。
