Multiphoton double ionization of helium at 394 nm: A fully differential experiment

doi:10.1103/PhysRevA.98.043405

	Multiphoton double ionization of helium at 394 nm: A fully differential experiment
	Henrichs, K.2; Eckart, S.2; Hartung, A.2; Trabert, D.2; Fehre, K.2; Rist, J.2; Sann, H.2; Pitzer, M.3,4; Richter, M.2; Kang, H.1,2
刊名	PHYSICAL REVIEW A
	2018-10-02
卷号	98 期号:4 页码:10
ISSN号	2469-9926
DOI	10.1103/PhysRevA.98.043405
英文摘要	We report on a kinematically complete experiment on strong-field double ionization of helium using laser pulses with a wavelength of 394 nm and intensities of 3.5-5.7 x 10(14) W/cm(2). Our experiment reaches the most complete level of detail, which previously has been reached only for single-photon double ionization. We give an overview of the observables on many levels of integration, from the ratio of double to single ionization, the individual electron, and ion momentum distributions over the joint momentum and energy distributions to fully differential cross sections showing the correlated angular momentum distributions. Within the studied intensity range the ratio of double to single ionization changes from 2 x 10(-4) to 1.5 x 10(-3). We find the momentum distributions of the He2+ ions and the correlated two electron momentum distributions to vary substantially. Only at the highest intensity are both electrons emitted in the same direction, while at the lowest intensity back-to-back emission dominates. The joint energy distribution of the electrons shows discrete structures from the energy quantization of the photon field, which allows us to count the number of absorbed photons and thus access the parity of the final state. We find the energy of the individual electron to show a peak structure indicating a quantized sharing of the overall energy absorbed from the field. The joint angular momentum distributions of the two electrons show the highly directed emission of both electrons along the polarization axis as well as clear imprints of electron repulsion. They strongly change with the energy sharing between electrons. The aspect of selection rules in double ionization which are also visible in the presented data set is the subject of a preceding publication [Henrichs et al., Phys. Rev. A 97, 031405(R) (2018)].
资助项目	German Research Foundation ; German Merit Foundation ; Alexander von Humboldt Foundation
WOS关键词	ABOVE-THRESHOLD IONIZATION ; ION MOMENTUM SPECTROSCOPY ; STRONG LASER FIELDS ; RECOIL-ION ; DOUBLE PHOTOIONIZATION ; CROSS-SECTIONS ; PROTON IMPACT ; SINGLE ; DISTRIBUTIONS ; DYNAMICS
WOS研究方向	Optics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000446164500008
资助机构	German Research Foundation ; German Merit Foundation ; Alexander von Humboldt Foundation ; German Research Foundation ; German Merit Foundation ; Alexander von Humboldt Foundation ; German Research Foundation ; German Merit Foundation ; Alexander von Humboldt Foundation ; German Research Foundation ; German Merit Foundation ; Alexander von Humboldt Foundation
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/13126]
专题	中国科学院武汉物理与数学研究所
通讯作者	Doerner, R.
作者单位	1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China 2.Goethe Univ Frankfurt, Inst Kernphys, Max von Laue Str 1, D-60438 Frankfurt, Germany 3.Weizmann Inst Sci, Inst Chem & Biol Phys, POB 26, IL-76100 Rehovot, Israel 4.Univ Kassel, Inst Phys, Heint Plett Str 40, D-34132 Kassel, Germany
推荐引用方式 GB/T 7714	Henrichs, K.,Eckart, S.,Hartung, A.,et al. Multiphoton double ionization of helium at 394 nm: A fully differential experiment[J]. PHYSICAL REVIEW A,2018,98(4):10.
APA	Henrichs, K..,Eckart, S..,Hartung, A..,Trabert, D..,Fehre, K..,...&Doerner, R..(2018).Multiphoton double ionization of helium at 394 nm: A fully differential experiment.PHYSICAL REVIEW A,98(4),10.
MLA	Henrichs, K.,et al."Multiphoton double ionization of helium at 394 nm: A fully differential experiment".PHYSICAL REVIEW A 98.4(2018):10.