کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10674827 | 1010449 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
HIRFL-CSR internal cluster target
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
Since HIRFL-CSR internal cluster target was built, it has played a key role in in-ring experiments at HIRFL-CSR. So far it have been operated with five gas species as targets for scattering experiments, i.e. hydrogen, nitrogen, argon, neon, and krypton. The obtained highest thickness for hydrogen target amounts up to 1012Â atoms/cm2, and those of other targets are larger than 1013Â atoms/cm2 with the background pressure of 10â11Â mbar in CSR. The target thickness can be varied by regulating the nozzle temperature and pressure of the inlet gas. The first online internal target experiment dedicated to investigate radioactive electron capture (REC) process with Xe54+ ions colliding with the nitrogen target demonstrated the stability and reliability of the internal target system. In addition, hydrogen and krypton were also tested online in recent experiments, which indicate the target system can meet experimental requirements for the thickness of target, pressure in scattering chamber, and long-term stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 317, Part B, 15 December 2013, Pages 617-622
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 317, Part B, 15 December 2013, Pages 617-622
نویسندگان
Caojie Shao, Rongchun Lu, Xiaohong Cai, Deyang Yu, Fangfang Ruan, Yingli Xue, Jianming Zhang, D.K. Torpokov, D. Nikolenko,