Development of a collinear laser spectrometer facility at VECC: First test result

Pramana: Journal of physics

WASEEM RAJA^2¹  AYAN RAY^1²  MD SABIR ALI^1³ 

[1] Accelerator Physics Group, Variable Energy Cyclotron Centre, Kolkata 700 064, India^3;Department of Physics, University of Kashmir, Srinagar 190 006, India^2;Radioactive Ion Beam Group, Variable Energy Cyclotron Centre, Kolkata 700 064, India^1

关键词: Collinear laser spectrometer;    isotope separator online;    charge exchange;    ellipsoid reflector;    photon counting;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We report here the development of collinear laser spectroscopy (CLS) system at VECC for the study of hyperfine spectrum and isotopic shift of stable and unstable isotopes. The facility is first of its kind in thecountry allowing measurement of hyperfine splitting of atomic levels using atomic beams. The CLS system is installed downstream of the focal plane of the existing isotope separator online (ISOL) facility at VECC and is recently commissioned by successfully resolving the fluorescence spectrum of the hyperfine levels in $^{85,87}\rm{Rb}$. The atomic beams of Rb were produced by charge exchange of 8 keV Rb ion beam which were produced, extracted and transported to the charge exchange cell using the ion sources, extractor and the beam-line magnets of the ISOL facility. The laser propagating opposite to the ion/atom beam direction was allowed to interact with the atom beam and fluorescence spectrum was recorded. The experimental set-up and the experiment conducted are reported in detail. The measures needed to be carried out for improving the sensitivity to a level necessary for studying short-lived exotic nuclei have also been discussed.

【 授权许可】

CC BY