Published September 2013 | Version v1
Miscellaneous Metadata-only

Atomic and molecular photophysics using short-wavelength free-electron lasers. Photoelectron angular distribution in the two-photon ionization of helium via extreme ultraviolet light

Creators

  • 1. Tokyo University, Graduate School of Engineering, Tokyo (Japan)
  • 2. Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Sendai, Miyagi (Japan)

Description

Advances in free-electron laser technology have made it possible to investigate the multiphoton processes of atoms and molecules based on femtosecond laser pulses in the extreme ultraviolet region. This paper introduces a theoretical study on the photoelectron angular distribution in the two-photon ionization of helium atoms. Two-photon ionization is one of the most basic nonlinear processes. When considering the pulse width dependence and wavelength dependence from the viewpoint of competition between the resonance path and non-resonance path, a new physics that cannot be captured by conventional light sources appears. (A.O.)

Availability note (English)

Available from http://www.atomiccollision.jp/collision/syoutotsu/13_1005s.pdf

Abstract (Japanese)

自由電子レーザー技術の進歩によって,フェムト秒レーザーパルスによる原子や分子の多光子過程を,極紫外領域で調べることができるようになった.本稿では,ヘリウム原子の2光子電離における光電子角度分布の理論研究を紹介する.2光子電離は最も基本的な非線形過程の1つであるが,共鳴パスと非共鳴パスの競合という視点からパルス幅依存性や波長依存性を考察すると,従来の光源ではとらえられなかった新しい物理が見えてくる.(著者)

Additional details

Additional titles

Original title (Japanese)
短波長自由電子レーザーによる原子分子光物理.極紫外光によるヘリウムの2光子電離における光電子角度分布

Identifiers

URL
http://www.atomiccollision.jp/collision/syoutotsu/13_1005s.pdf;

Publishing Information

Imprint Pagination
46 p.

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
51003147
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ANGULAR DISTRIBUTION; DIPOLES; ELECTRIC FIELDS; FREE ELECTRON LASERS; HARMONICS; HELIUM; LIGHT SOURCES; PERTURBATION THEORY; RESONANCE; SPRING-8 STORAGE RING; TRANSFER MATRIX METHOD; WAVELENGTHS
Descriptors DEC
CALCULATION METHODS; DISTRIBUTION; ELEMENTS; FLUIDS; GASES; LASERS; MULTIPOLES; NONMETALS; OSCILLATIONS; RADIATION SOURCES; RARE GASES; STORAGE RINGS; SYNCHROTRON RADIATION SOURCES

Optional Information

Notes
雑誌名:しょうとつ, v. 10(5), p. 110-117; 16 refs., 6 figs.