自由电子激光制备高强度亚稳态氦原子和类氦离子OA北大核心CSTPCD
Free electron laser prepared high-intensity metastable helium and helium-like ions
在少电子原子精密光谱测量中,产生高强度、单一量子态的氦原子和类氦离子是实验研究的关键,也是改善实验测量信噪比的决定性因素.本文提出利用自由电子激光获得高强度亚稳态氦原子和类氦离子的实验方案.激光的制备效率可以通过求解光和原子相互作用的主方程获得,根据拟建设的深圳自由电子激光装置的设计参数和实验条件,计算得到亚稳态He,Li+和Be2+的制备效率分别可达 3%,6%和 2%以上.与常见的气体放电和电子轰击等制备方法相比,激光激发产生亚稳态原子/离子…查看全部>>
In the precision spectroscopy of few-electron atoms,the generation of high-intensity metastable helium atoms and helium-like ions is crucial for implementing experimental studies as well as a critical factor for improving the signal-to-noise ratio of experimental measurements.With the rapid development of free-electron laser(FEL)and technology,FEL wavelengths extend from hard X-rays to soft X-rays and even vacuum ultraviolet bands.Meanwhile,laser pulses with…查看全部>>
杜小娇;魏龙;孙羽;胡水明
深圳综合粒子设施研究院,深圳 518107深圳综合粒子设施研究院,深圳 518107深圳综合粒子设施研究院,深圳 518107中国科学技术大学化学物理系,合肥 230026
亚稳态氦原子和类氦离子精密光谱自由电子激光测量信噪比制备效率
metastable helium and helium-like ionsprecision spectroscopyfree electron lasersignal-to-noise ratiopreparation effciency
《物理学报》 2024 (15)
1-8,8
国家自然科学基金(批准号:12304291,22241301,91736101,12393822)和国家科技部博士后基金(批准号:2022M723062)资助的课题.Project supported by the National Natural Science Foundation of China(Grant Nos.12304291,22241301,91736101,12393822)and the Science Foundation for Postdoctoral Research of the Ministry of Science and Technology of China(Grant No.2022M723062).
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