Efficient soft x-ray sources from laser-irradiated gold foam targets with well-controlled impurities

被引：12

作者：

Dong, Yunsong ^{[1
]}

Yang, Jiamin ^{[1
]}

Song, Tianming ^{[1
]}

Shang, Wanli ^{[1
]}

Zhang, Lu ^{[1
]}

Huang, Chengwu ^{[1
]}

Zhu, Tuo ^{[1
]}

Zhang, Wenhai ^{[1
]}

Li, Zhichao ^{[1
]}

Zhan, Xiayu ^{[1
]}

Du, Huabing ^{[1
]}

Wang, Feng ^{[1
]}

Liu, Shenye ^{[1
]}

Jiang, Shaoen ^{[1
]}

Ding, Yongkun ^{[1
]}

机构：

[1] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China

来源：

NUCLEAR FUSION | 2018年 / 58卷 / 01期

关键词：

Au foam; enhanced soft x-ray source; impurities; PHYSICS;

D O I：

10.1088/1741-4326/aa9453

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

As an important x-ray source, enhancement of x-ray emissions from laser-produced plasmas is significant for various applications. Due to less expanding kinetic loss, gold foam with low initial density can have an enhanced x-ray conversion efficiency compared with solid-density gold. However, low-Z impurities within gold foam targets will diminish the enhancement remarkably, and should be tightly controlled. This paper presents an experimental study of a high brightness laser plasma soft x-ray source, based on a 0.36 g cm(-3) gold foam target with negligible impurities irradiated by nanosecond laser pulses with power density around 3 x 10(14) W cm(-2) at the Shenguang II laser facility. A conversion efficiency, from multi-eV to multi-keV, of 51.2% is achieved in the x-ray emissions-about 21% relative enhancement compared with a solid-density gold target, and the highest conversion efficiency for Au foam planar targets yet. Good agreement has been achieved between the semi-analytical model prediction and the experimental results.

引用

页数：8

共 50 条

[21] Ultrafast X-ray diffraction of laser-irradiated crystals
Heimann, PA
Lindenberg, AM
Kang, I
Johnson, S
Missalla, T
Chang, Z
Falcone, RW
Schoenlein, RW
Glover, TE
Padmore, HA
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2001, 467 : 986 - 989
[22] Efficient X-ray emission from laser-irradiated low-density lead target: a substitute for gold in hohlraum design
Fazeli, R.
APPLIED PHYSICS B-LASERS AND OPTICS, 2015, 121 (01): : 95 - 105
[23] X-RAY TRANSMISSION THROUGH A LASER-IRRADIATED TARGET
NG, A
ADAMS, FP
GAZIT, Y
DASILVA, L
PHYSICS OF FLUIDS, 1987, 30 (01) : 186 - 189
[24] Measurements of laser generated soft X-ray emission from irradiated gold foils
Davis, J. S.
Frank, Y.
Raicher, E.
Fraenkel, M.
Keiter, P. A.
Klein, S. R.
Drake, R. P.
Shvarts, D.
REVIEW OF SCIENTIFIC INSTRUMENTS, 2016, 87 (11):
[25] UNUSUAL STRUCTURES OBSERVED IN X-RAY-EMISSION FROM LASER-IRRADIATED TARGETS
HERBST, MJ
WHITLOCK, RR
YOUNG, FC
PHYSICAL REVIEW LETTERS, 1981, 47 (02) : 91 - 94
[26] Femtosecond X-ray Diffraction: Applications for Laser-Irradiated Materials
Wark, Justin S.
ATOMIC PROCESSES IN PLASMAS, 2009, 1161 : 253 - 253
[27] Investigations of X-ray emission from a laser-irradiated gas puff target
Fiedorowicz, H
Bartnik, A
Jarocki, R
17TH CONGRESS OF THE INTERNATIONAL COMMISSION FOR OPTICS: OPTICS FOR SCIENCE AND NEW TECHNOLOGY, PTS 1 AND 2, 1996, 2778 : 1195 - 1196
[28] Beneficial effect of CH foam coating on x-ray emission from laser-irradiated high-Z material
Xu, Yan
Zhu, Tuo
Li, Shuanggui
Yang, Jiamin
PHYSICS OF PLASMAS, 2011, 18 (05)
[29] X-ray reemission from gold disk targets heated by soft x-ray radiation
Huang, Tianxuan
Sun, Kexu
Zheng, Zhijian
Yi, Rongqing
Wuli Xuebao/Acta Physica Sinica, 47 (01): : 40 - 46
[30] ANALYSIS OF X-RAY-SPECTRA FROM LASER-IRRADIATED HIGH-Z TARGETS
ZHOU, YQ
ZHANG, BH
LEI, AL
PHYSICS LETTERS A, 1995, 204 (5-6) : 379 - 385

← 1 2 3 4 5 →