ISSN:0049-8246    

DOI:10.1002/xrs.1300130402

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractThe usability of glass disks prepared from blast furnace slag samples as a function of age in x‐ray emission spectrometry was investigated. Glass disks were prepared by melting sample and flux mixtures (Li2B4O7–Li2CO3–La2O3, 100: 10: 5) in the ratio 1: 100 at 1100°C for 30 min. The glass disks were examined by the ISIJ test. X‐ray spectrometry and scanning electron microscopy were applied directly after preparation and again after 6, 12 and 18 months. A change in the surface of the glass disk and a decrease in the Ca Kα, Si Kα and S Kα line intensities with time we

ISSN:0049-8246    

DOI:10.1002/xrs.1300130403

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractA method for determining the ash content of coal by measuring the x‐ray fluorescence of Si, Al, Ca and Fe using a diffraction spectrometer is presented. The experiments were carried out on 72 samples of coal from different deposits. A mean standard deviation of the ash content of about 1. 65% was achieve

ISSN:0049-8246    

DOI:10.1002/xrs.1300130404

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractThe fine structure in the vicinity of the K absorption edge of cobalt in some cobalt biomolecular complexes has been studied using a bent crystal x‐ray spectrograph of the Cauchois type. The average metal—ligand bond length in these complexes has been determined by applying Levy's the

ISSN:0049-8246    

DOI:10.1002/xrs.1300130405

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractK absorption edge data for TPP and FDH compounds of cobalt and copper have been recorded. Edge position shifts, changes in edge widths and shifts in the position of first absorption maximum are discussed.

ISSN:0049-8246    

DOI:10.1002/xrs.1300130406

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractA method is described for the quantitative analysis of bulk specimens without standards by using peak‐to‐local background ratios in energy‐dispersive electron probe microanalysis. Theoretical transport investigations have been used to derive an expression for the absolute determination of (P/B) ratios. Accurate measurement of the background below a peak is carried out without an exact knowledge of the surface geometry of the specimens. The advantages of this method are discussed in comparison with other correction procedures and the efficiency is demonstrated by means of quantitative analysis of nine binary specimens and two steel spec

ISSN:0049-8246    

DOI:10.1002/xrs.1300130407

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractA theoretical evaluation of the efficiency of correction for the matrix absorption effect using Compton scattered x‐rays in EDXRF analysis has been carried out for thick samples and for monoenergetic primary radiation. The limitations of this correction method and the procedure for the selection of the optimum excitation energy are presente

ISSN:0049-8246    

DOI:10.1002/xrs.1300130408

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractX‐ray spectrometry has been used to determine the pressure of krypton gas in high‐pressure halogen auto lamps. The method employs a standard diffraction tube, a special collimator and a solid‐state det

ISSN:0049-8246    

DOI:10.1002/xrs.1300130409

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractPDIDENT is a collection of interactive computer programs which have been developed as aids for qualitative phase analysis of x‐ray powder diffraction data. These FORTRAN IV programs are implemented on a DEC committee on Powder Diffraction Standards (JCPDS) data base is accessed by the programs along with user‐created data. The data base (sets 1–32) along with all cross‐index files requires 9 Mbytes of storage. The packing of the data base, use of cross‐index files and the algorithms and utility of the PDIDENT programs are

ISSN:0049-8246    

DOI:10.1002/xrs.1300130410

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractMass absorption coefficients can be calculated by this algorithm with programmable pocket calculators giving a standard deviation of about 5% when compared with McMaster's tables.

ISSN:0049-8246    

DOI:10.1002/xrs.1300130411

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY