title: Efficient generation of Xe K-shell x rays by high-contrast interaction with submicrometer clusters.
abstract: The interaction between a 25 TW laser and Xe clusters at a peak intensity of 1 × 10¹⁹ W/cm² has been investigated. Xe K-shell x rays, whose energies are approximately 30 keV, were clearly observed with a hard x-ray CCD at 3.4 MPa. Moreover, we studied the yield of the Xe K-shell x rays by changing the pulse duration of the laser at a constant laser energy and found that the pulse duration of 40 fs is better than that of 300 fs for generating Xe K-shell x rays.
authors.affiliation: Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215, Japan. hayashi.yukio@jaea.go.jp
authors.forename: Yukio
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Pirozhkov
authors.forename: Masaki
authors.initials: M
authors.lastname: Kando
authors.forename: Yuji
authors.initials: Y
authors.lastname: Fukuda
authors.forename: Anatoly
authors.initials: A
authors.lastname: Faenov
authors.forename: Keigo
authors.initials: K
authors.lastname: Kawase
authors.forename: Tatiana
authors.initials: T
authors.lastname: Pikuz
authors.forename: Tatsufumi
authors.initials: T
authors.lastname: Nakamura
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Kiriyama
authors.forename: Hajime
authors.initials: H
authors.lastname: Okada
authors.forename: Sergei V
authors.initials: SV
authors.lastname: Bulanov