Charge state optimisation for beryllium accelerator mass spectrometry

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:469

Article

Gonsalves, Basil C.¹  Mizohata, Kenichiro¹  Tikkanen, Pertti O.¹  Raisanen, Jyrki A.¹ 

[1] Univ Helsinki, Dept Phys, POB 64, FIN-00014 Helsinki, Finland

关键词: AMS;    Beryllium;    Charge state;   

DOI  :  10.1016/j.nimb.2020.02.020

来源: Elsevier

【 摘 要 】

The yields of Be-9 charge states (q = +1, + 2, +3, and + 4) from injected BeO- were measured with terminal voltage range from 1 to 5 MV. The yields were determined from the momentum analysed beam currents measured by beam profile monitors, after the 90 degrees injector and analysing magnets. Stripping gas pressure dependency of the transmission efficiency was also determined and the results were studied with SRIM simulations. The effect of stripping medium was studied using both Ar and CO2 gases. The presented results are compared against experimental values found from literature, semi-empirical parametrisation models, and charge-exchange theories.

【 授权许可】

Free