dc.contributor.author | Zhou, Zhongyuan | |
dc.contributor.author | Chu, Shih-I | |
dc.date.accessioned | 2014-12-01T21:28:57Z | |
dc.date.available | 2014-12-01T21:28:57Z | |
dc.date.issued | 2013-02-13 | |
dc.identifier.citation | Zhou, Zhongyuan; Chu, Shih-I. (2013). "Multiphoton above-threshold ionization in superintense free-electron x-ray laser fields: Beyond the dipole approximation." Physical Review A, 87(2):023407. http://dx.doi.org/10.1103/PhysRevA.87.023407. | |
dc.identifier.issn | 1050-2947 | |
dc.identifier.uri | http://hdl.handle.net/1808/15979 | |
dc.description | This is the publisher's version, also available electronically from http://journals.aps.org/pra/abstract/10.1103/PhysRevA.87.023407. | |
dc.description.abstract | We present an accurate and efficient nondipole computational approach in momentum space for the nonperturbative study of multiphoton above-threshold ionization (ATI) of atoms in superintense and ultrashort-wavelength laser fields. This approach has been successfully used to investigate the multiphoton processes of a hydrogen atom exposed to superintense free-electron x-ray laser fields. We find that, compared to results of the dipole approximation, the nondipole ATI spectra are enhanced substantially in the high-energy regime, and the photoelectron angular distributions are distorted significantly in higher-intensity and/or longer-pulse laser fields; in particular two lobes are induced, one along and one against the laser propagation direction. The origin of these phenomena has been explored in detail. | |
dc.publisher | American Physical Society | |
dc.title | Multiphoton above-threshold ionization in superintense free-electron x-ray laser fields: Beyond the dipole approximation | |
dc.type | Article | |
kusw.kuauthor | Zhou, Zhongyuan | |
kusw.kuauthor | Chu, Shih-I | |
kusw.kudepartment | Chemistry | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1103/PhysRevA.87.023407 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess | |