SPECTRA AND FLUXES ATTENUATION OF 14 MEV NEUTRONS IN IRON GRAPHITE SHIELDS

被引：2

作者：

MEGAHID, RM ^{[1
]}

KANY, AMI ^{[1
]}

ABDO, AE ^{[1
]}

KANY, MSMI ^{[1
]}

机构：

[1] AL-AZHAR UNIV,FAC SCI,DEPT PHYS,CAIRO,EGYPT

来源：

RADIATION PHYSICS AND CHEMISTRY | 1994年 / 44卷 / 1-2期

关键词：

D O I：

10.1016/0969-806X(94)90115-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Twenty-two group calculations were made to study the attenuation and energy degradation of rast neutrons in homogeneous and laminated shields of iron-graphite, in the form of a sphere having a monoenergetic point neutron source of 14 MeV produced from T(D, n)He reaction at its centre. Calculations were performed with the multigroup diffusion and removal diffusion equations in one dimension. The multigroup cross-section set was taken from the ENDF/B-IV cross-section library. Results were presented only for neutrons of energies from 14 to 0.4 MeV. The relaxation lengths for fast neutrons of different energy groups were determined from the attenuation curves by the ''least square fit''.

引用

页码：109 / 114

页数：6

共 50 条

[31] Mossbauer spectroscopic study of iron selenate irradiated by 14 MeV neutrons [J].

Nakada, M ;

Masaki, NM ;

Saeki, M ;

Aratono, Y ;

Ikeda, Y ;

Endo, K .

INTERNATIONAL CONFERENCE ON THE APPLICATIONS OF THE MOSSBAUER EFFECT - ICAME-95, 1996, 50 :99-102

[32] RADIATION HARDENING OF ZONE-REFINED IRON BY 14 MEV NEUTRONS [J].

MATSUI, H ;

YOSHINARI, O .

JOURNAL OF NUCLEAR MATERIALS, 1986, 141 :851-854

[33] RADIATION SOFTENING OF HIGH-PURITY IRON BY 14 MEV NEUTRONS [J].

MATSUI, H ;

SHIMIDZU, H ;

TAKEHANA, S ;

GUINAN, MW .

JOURNAL OF NUCLEAR MATERIALS, 1988, 155 (pt B) :1169-1173

[34] EXPERIMENTS WITH 14 MEV AND 600 MEV NEUTRONS [J].

HENDRY, JH ;

BIANCHI, M .

BRITISH JOURNAL OF RADIOLOGY, 1977, 50 (595) :535-535

[35] SPECTRA FOR REACTOR FAST NEUTRONS PASSED THROUGH GRAPHITE LEAD AND IRON [J].

VESELKIN, AP ;

EGOROV, YA ;

ORLOV, YV ;

PANKRATE.YV .

JOURNAL OF NUCLEAR ENERGY PARTS A AND B-REACTOR SCIENCE AND TECHNOLOGY, 1965, 19 (1PA-) :37-&

[36] ATTENUATION OF 14 MEV NEUTRONS IN CALCIUM-BASED CONCRETE AND RESULTANT PRODUCTION OF RADIOACTIVITY [J].

GREENE, D ;

MAJOR, D ;

CROFT, JR ;

ROBERTS, GC .

BRITISH JOURNAL OF RADIOLOGY, 1971, 44 (518) :116-&

[37] DETERMINATION OF OXYGEN IN ALUMINIUM BY MEANS OF 14 MEV NEUTRONS WITH AN ACCOUNT OF FLUX ATTENUATION IN SAMPLE [J].

BRUNE, D ;

JIRLOW, K .

JOURNAL OF RADIOANALYTICAL CHEMISTRY, 1969, 2 (1-2) :49-&

[38] MEASUREMENTS AND ANALYSIS OF INTEBRAL NEUTRON SPECTRA PRODUCED BY 14-MEV NEUTRONS [J].

HANSEN, LF .

TRANSACTIONS OF THE AMERICAN NUCLEAR SOCIETY, 1970, 13 (01) :262-&

[39] NEUTRON LEAKAGE SPECTRA THROUGH A BERYLLIUM SLAB BOMBARDED BY 14 MEV NEUTRONS [J].

JORDANOVA, J ;

PENCHEV, O .

ANNALS OF NUCLEAR ENERGY, 1993, 20 (10) :653-658

[40] Benchmark experiment on the 14 MeV neutron transmission in models of iron and iron-water shields with slits [J].

MIFI, Moscow, Russia .

At Energ, 2 (125-130)

← 1 2 3 4 5 →