Z-dependence of spectral photon energy distributions of thick target bremsstrahlung

被引：6

作者：

Dhaliwal, AS ^{[1
]}

机构：

[1] Sant Longowal Inst Engn & Technol, Dept Phys, Longowal 148106, Punjab, India

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2005年 / 234卷 / 03期

关键词：

bremsstrahlung; Z-dependence;

D O I：

10.1016/j.nimb.2005.02.005

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Z-dependence of spectral photon energy distributions of external bretrisstrahlung (EB) in thick targets of Al, Cu, Sn and Pb, produced by S-35 and Sr-89, were studied. Theoretical EB photon distributions were obtained both from Elwert corrected Bethe-Heitler, and Tseng and Pratt theories, The experimental EB spectra were measured using a thick NaI(Tl) detector. It is found that the spectral shapes of EB spectra as a function of photon energy k displays a Z(m) dependence on the atomic number Z of the target material. The proportionality factor shows an exponentially decaying dependency on photon energy k that is inversely proportional to the end point energy of the beta particles coming from a particular beta emitter. The results agree well with theoretical Calculations based on different models, (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：194 / 202

页数：9

共 20 条

[11] BREMSSTRAHLUNG CROSS-SECTION FORMULAS AND RELATED DATA [J].

KOCH, HW ;

MOTZ, JW .

REVIEWS OF MODERN PHYSICS, 1959, 31 (04) :920-955

[12] BETA-SPECTRA OF FORBIDDEN TRANSITIONS [J].

LANGER, LM ;

PRICE, HC .

PHYSICAL REVIEW, 1949, 76 (05) :641-646

[13]

Mott N. F., 1965, The Theory of Atomic Collisions

[14]

Pratt R. H., 1977, Atomic Data and Nuclear Data Tables, V20, P175, DOI 10.1016/0092-640X(77)90045-6

[15] BREMSSTRAHLUNG ENERGY-SPECTRA FROM ELECTRONS WITH KINETIC-ENERGY 1 KEV-10 GEV INCIDENT ON SCREENED NUCLEI AND ORBITAL ELECTRONS OF NEUTRAL ATOMS WITH Z = 1-100 [J].

SELTZER, SM ;

BERGER, MJ .

ATOMIC DATA AND NUCLEAR DATA TABLES, 1986, 35 (03) :345-418

[16] Z DEPENDENCE OF ATOMIC-FIELD BREMSSTRAHLUNG [J].

SEMAAN, M ;

QUARLES, C .

PHYSICAL REVIEW A, 1982, 26 (06) :3152-3154

[17]

Sommerfeld A, 1931, ANN PHYS-BERLIN, V11, P257

[18] EXACT SCREENED CALCULATIONS OF ATOMIC-FIELD BREMSSTRAHLUNG [J].

TSENG, HK ;

PRATT, RH .

PHYSICAL REVIEW A, 1971, 3 (01) :100-&

[19] The continuous x-rays excited by the beta-particles of P-15(32) [J].

Wu, CS .

PHYSICAL REVIEW, 1941, 59 (06) :481-488

[20] A test of high-energy electron bremsstrahlung calculations [J].

Yuly, M ;

Mittelstaedt, J ;

Kinney, ER ;

Maher, C ;

Matthews, JL ;

Sapp, WW ;

Soos, T ;

Owens, RO .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 488 (1-2) :262-270

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