DETAILED STUDY OF THE EFFECT OF A SHORT PREPULSE ON SOFT-X-RAY SPECTRA GENERATED BY A HIGH-INTENSITY KRF-ASTERISK LASER-PULSE

被引：62
作者：
TEUBNER, U
KUHNLE, G
SCHAFER, FP
机构：
[1] Abteilung Laserphysik, Max-Planck-Institut für biophysikalische Chemie, Göttingen, W-3400, Am Fassberg
来源：
APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY | 1992年 / 54卷 / 06期
关键词：
D O I：
10.1007/BF00325515
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of a short prepulse (0.5 ps) on soft X-ray spectra from a plasma generated by a high intensity KrF* laser pulse (main pulse: 0.5 ps, intensity I(main) = 5.3 x 10(15) W/cm2) on flat targets of Al and Cu has been studied in detail. The spectra have been measured as a function of the pulse separation DELTA-t between the two pulses and the prepulse intensity I(pre). It was found that both the overall emission and the line emission increased with DELTA-t (at constant I(pre)) and with I(pre) (at constant DELTA-t). In particular, lines in the shorter wavelength region had higher intensity. The influence of the prepulse on the line emission of specific transitions in the Al spectra was investigated systematicly. An explanation for the observed effects is given.
引用
收藏
页码：493 / 499
页数：7
相关论文
共 34 条
[1]   X-RAY CONVERSION EFFICIENCY AS A FUNCTION OF ATOMIC-NUMBER FOR 0.26-MU-M-LASER - IRRADIATED TARGETS [J].
ALATERRE, P ;
PEPIN, H ;
FABBRO, R ;
FARAL, B .
PHYSICAL REVIEW A, 1986, 34 (05) :4184-4194
[2]   X-RAY LASING BY OPTICAL-FIELD-INDUCED IONIZATION [J].
AMENDT, P ;
EDER, DC ;
WILKS, SC .
PHYSICAL REVIEW LETTERS, 1991, 66 (20) :2589-2592
[3]  
BAKOS JS, 1990, P Q ELECTR, V44, P251
[4]  
BOEHLY T, 1990, 116 I PHYS C SER BRI, P139
[5]   POPULATION-INVERSION IN THE RECOMBINATION OF OPTICALLY-IONIZED PLASMAS [J].
BURNETT, NH ;
ENRIGHT, GD .
IEEE JOURNAL OF QUANTUM ELECTRONICS, 1990, 26 (10) :1797-1808
[6]   INTERACTION OF SHORT LASER PULSES WITH SOLID MATERIALS [J].
CARUSO, A ;
GRATTON, R .
PLASMA PHYSICS, 1969, 11 (10) :839-&
[7]   ABSORPTION OF SUBPICOSECOND ULTRAVIOLET-LASER PULSES IN HIGH-DENSITY PLASMA [J].
FEDOSEJEVS, R ;
OTTMANN, R ;
SIGEL, R ;
KUHNLE, G ;
SZATMARI, S ;
SCHAFER, FP .
APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY, 1990, 50 (02) :79-99
[8]   ABSORPTION OF FEMTOSECOND LASER-PULSES IN HIGH-DENSITY PLASMA [J].
FEDOSEJEVS, R ;
OTTMANN, R ;
SIGEL, R ;
KUHNLE, G ;
SZATMARI, S ;
SCHAFER, FP .
PHYSICAL REVIEW LETTERS, 1990, 64 (11) :1250-1253
[9]  
Ginzburg V. L., 1964, PROPAGATION ELECTROM
[10]  
KEY MH, 1989, SPIE XRAY INSTRUM, V1140, P21
1234