摘要:

AbstractSmoothing is an important part of spectrum unfolding by the FERDOR method. This unfolding method is discussed, and changes to the smoothing procedure are presented. An iterative procedure for determining window widths has also been added to the method. This iterative procedure optimizes the energy resolution of unfolded spectra. A plutonium-beryllium neutron spectrum is unfolded as an example of the improvement obtained in unfolded spectra. Response matrices available for use with the FERDOR method are discussed.

ISSN:0029-5639    

DOI:10.13182/NSE80-A18713

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

摘要:

AbstractBuildup factors for photons in infinite homogeneous samples of air, water, and iron have been calculated by a moments method code. The photons were assumed to be emitted from a point source. Comparisons of these results to values obtained earlier, both by experiment and by calculation, show reasonable agreement except in some instances of deep penetration. The parameters in the Berger empirical formula for buildup factors have been evaluated from the present work. The Berger formula is shown to fit the calculational results for nuclei of low atomic number at energies above 1 Me V and below 0.06 MeV. In mid-energy range, differences of as much as 40% are observed. The formula appears to provide excellent fit to the data for nuclei of medium atomic number.

ISSN:0029-5639    

DOI:10.13182/NSE80-A18714

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0029-5639    

DOI:10.13182/NSE80-A18715

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0029-5639    

DOI:10.13182/NSE80-A18716

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0029-5639    

DOI:10.13182/NSE80-A18717

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0029-5639    

DOI:10.13182/NSE80-A18719

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor

ISSN:0029-5639    

DOI:10.13182/NSE80-A18720

出版商:Taylor&Francis    

年代:1980

数据来源: Taylor