Photoionization yield of atomic hydrogen using intense few-cycle pulses

28th International Conference on Photonic, Electronic and Atomic Collisions

Ghafur, O.^1,2 ; Wallace, W.C.^1,2 ; Calvert, J.E.^1,2 ; Laban, D.E.^1,2 ; Pullen, M.G.^1,2 ; Grum-Grzhimailo, A.N.^3,4 ; Bartschat, K.^4 ; Litvinyuk, I.V.^2 ; Sang, R.T.^1,2 ; Kielpinski, D.^1,2

ARC Centre of Excellence for Coherent X-Ray Science, Griffith University, Nathan

QLD

4111, Australia^1

Australian Attosecond Science Facility, Centre for Quantum Dynamics, Griffith University, Nathan

QLD

4111, Australia^2

Department of Physics and Astronomy, Drake University, Des Moines

IA, United States^3

Institute of Nuclear Physics, Moscow State University, Moscow, Russia^4

关键词: Ab initio simulations;    Analytical theory;    Atomic hydrogen;    Few-cycle laser pulse;    Few-cycle pulse;    Laser intensities;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/3/032045/pdf
DOI  :  10.1088/1742-6596/488/3/032045

来源: IOP

【 摘 要 】

We present experimentally measured photoionization yields of atomic hydrogen as a function of laser intensity for few-cycle laser pulses. Comparison of data with exact ab-initio simulations produce better agreement than analytical theories and enable accurate intensity calibration.