An atomic beam of 6Li — 7Li for high resolution spectroscopy from matrix isolation sublimation

8th Brazilian Congress on Metrology

Oliveira, A.N.^1 ; Sacramento, R.L.^2 ; Silva, B.A.^2 ; Uhlmann, F.O.^3 ; Wolff, W.^2 ; Cesar, C.L.^2

INMETRO, Av. Nossa Senhora das Graças, 50, Duque de Caxias

RJ

25250-020, Brazil^1

Instituto de Física, Universidade Federal Do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro

RJ

21941-972, Brazil^2

Beuth University of Applied Science, Berlin

13353, Germany^3

关键词: Experimental check;    Forward velocity;    High-resolution spectroscopy;    Isotope shifts;    Lithium atoms;    Matrix isolation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012063/pdf
DOI  :  10.1088/1742-6596/733/1/012063

来源: IOP

【 摘 要 】

We propose the Matrix Isolation Sublimation (MlSu) technique for generating cold lithium atoms for the measurement of the6Li -7Li isotope shift in D1 and D2 transitions. The technique is capable of generating cold6Li and7Li beams at 4 K with forward velocity of 125 m/s. Using this beam we offer a distinguished source of lithium atoms for transitions measurements, adding a new possibility to make high resolution spectroscopy towards improving the experimental checks of the theory.