SPECTROSCOPIC MEASUREMENTS OF ROSSELAND MEAN OPACITY

被引：21
作者：
SPRINGER, PT
FIELDS, DF
WILSON, BG
NASH, JK
GOLDSTEIN, WH
IGLESIAS, CA
ROGERS, FJ
SWENSON, JK
CHEN, MH
BARSHALOM, A
STEWART, RE
机构：
来源：
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 1994年 / 51卷 / 1-2期
关键词：
D O I：
10.1016/0022-4073(94)90100-7
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The first quantitative measurement of photoabsorption in the region determining Rosseland and Planck mean opacity, is obtained for an x-ray heated iron plasma, using novel techniques and instrumentation. The plasma density of 0.0113 +/- 0.0013 g/cm3 and temperature of 59 +/- 3 eV are accurately constrained experimentally by imaging plasma expansion and observing and modeling absorption in sodium dopant ions. The measured iron absorption spectrum is compared with several newly developed opacity models. The data constrains Rosseland and Planck group means with of order 15% precision. This is the first quantitative experimental certification of opacity models germane to radiative transfer in LTE plasmas.
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页码：371 / 377
页数：7
相关论文
共 20 条
[1]  
Bar-Shalom A., 1991, ATOMIC PROCESSES PLA, P68
[2]   SUPER-TRANSITION-ARRAYS - A MODEL FOR THE SPECTRAL-ANALYSIS OF HOT, DENSE-PLASMA [J].
BARSHALOM, A ;
OREG, J ;
GOLDSTEIN, WH ;
SHVARTS, D ;
ZIGLER, A .
PHYSICAL REVIEW A, 1989, 40 (06) :3183-3193
[3]  
BAUCHEARNOULT C, 1988, ADV ATOM MOL PHYS, V23, P131
[4]  
BRUNEAU J, 1991, PHYS REV A, V44, P832
[5]   RELATIVISTIC AUGER AND X-RAY-EMISSION RATES OF THE 1S2LN(2L')M CONFIGURATIONS OF BE-LIKE IONS [J].
CHEN, MH .
PHYSICAL REVIEW A, 1985, 31 (03) :1449-1451
[6]   ABSORPTION-MEASUREMENTS DEMONSTRATING THE IMPORTANCE OF DELTA-N = 0 TRANSITIONS IN THE OPACITY OF IRON [J].
DASILVA, LB ;
MACGOWAN, BJ ;
KANIA, DR ;
HAMMEL, BA ;
BACK, CA ;
HSIEH, E ;
DOYAS, R ;
IGLESIAS, CA ;
ROGERS, FJ ;
LEE, RW .
PHYSICAL REVIEW LETTERS, 1992, 69 (03) :438-441
[7]   INVESTIGATION OF THE OPACITY OF HOT, DENSE ALUMINUM IN THE REGION OF ITS K-EDGE [J].
DAVIDSON, SJ ;
FOSTER, JM ;
SMITH, CC ;
WARBURTON, KA ;
ROSE, SJ .
APPLIED PHYSICS LETTERS, 1988, 52 (10) :847-849
[8]   L-SHELL ABSORPTION-SPECTRUM OF AN OPEN-M-SHELL GERMANIUM PLASMA - COMPARISON OF EXPERIMENTAL-DATA WITH A DETAILED CONFIGURATION-ACCOUNTING CALCULATION [J].
FOSTER, JM ;
HOARTY, DJ ;
SMITH, CC ;
ROSEN, PA ;
DAVIDSON, SJ ;
ROSE, SJ ;
PERRY, TS ;
SERDUKE, FJD .
PHYSICAL REVIEW LETTERS, 1991, 67 (23) :3255-3258
[9]  
GOLDSTEIN W, 1991, RAD PROPERTIES HOT D
[10]   AN ATOMIC MULTICONFIGURATIONAL DIRAC-FOCK PACKAGE [J].
GRANT, IP ;
MCKENZIE, BJ ;
NORRINGTON, PH ;
MAYERS, DF ;
PYPER, NC .
COMPUTER PHYSICS COMMUNICATIONS, 1980, 21 (02) :207-231
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