A new Cu Kα2-elimination algorithm

被引:43
作者
Dong, C
Chen, H
Wu, F
机构
[1] Chinese Acad Sci, Ctr Condensed Matter Phys, Natl Lab Superconduct, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
关键词
D O I
10.1107/S0021889898010632
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This paper presents a new algorithm to remove the Cu K alpha(2) profile in X-ray powder diffraction patterns. Previous algorithms for alpha(2) elimination can be divided into two categories. The first category assumes the shape identity of the alpha(1) and alpha(2) components. The second category uses parameters by fitting experimental data. The first category is not accurate and the second one is instrument-dependent. The algorithm presented here uses the Cu K alpha emission profile obtained from monolithic double-crystal measurements. Therefore, it is more accurate and less instrument-dependent than the previous methods. This algorithm has been tested and applied in software for diffraction data processing. The present method can be extended to remove K alpha(2) lines of other radiations.
引用
收藏
页码:168 / 173
页数:6
相关论文
共 11 条
[1]  
ALTOMARE A, 1995, J APPL CRYSTALLOGR, V28, P742
[2]   STUDY OF THE K-ALPHA EMISSION-SPECTRUM OF COPPER [J].
BERGER, H .
X-RAY SPECTROMETRY, 1986, 15 (04) :241-243
[3]   A FUNDAMENTAL PARAMETERS APPROACH TO X-RAY LINE-PROFILE FITTING [J].
CHEARY, RW ;
COELHO, A .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1992, 25 (pt 2) :109-121
[4]   IMPROVED ALPHA-2 ELIMINATION [J].
DELHEZ, R ;
MITTEMEIJER, EJ .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1975, 8 (DEC1) :609-611
[5]   WAVELENGTH, ENERGY SHAPE, AND STRUCTURE OF THE CU K-ALPHA-1 X-RAY-EMISSION LINE [J].
DEUTSCH, M ;
HART, M .
PHYSICAL REVIEW B, 1982, 26 (10) :5558-5567
[6]   ELIMINATION OF THE ALPHA-1ALPHA-2-DOUBLET IN X-RAY PATTERNS [J].
KEATING, DT .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1959, 30 (08) :725-727
[7]   DIRECT EVALUATION OF KALPHA-1 FOURIER COEFFICENTS IN X-RAY PROFILE ANALYSIS [J].
KIDRON, A ;
DEANGELI.RJ .
ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1971, A 27 (NOV1) :596-&
[8]   CU K-ALPHA-2 ELIMINATION ALGORITHM [J].
LADELL, J ;
ZAGOFSKY, A ;
PEARLMAN, S .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1975, 8 (OCT1) :499-506
[9]  
MALLORY LM, 1978, ADV XRAY ANAL, V22, P121
[10]   STRUCTURE AND WAVELENGTH OF THE CU K-ALPHA-2 X-RAY-EMISSION LINE [J].
MASKIL, N ;
DEUTSCH, M .
PHYSICAL REVIEW A, 1988, 37 (08) :2947-2952