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A new approach to estimate the geometrical factors, solid angle approximation, geometrical efficiency and their use in basic interaction cross section measurements

Published online by Cambridge University Press:  01 October 2002

D. V. Rao ,
R. Cesareo ,
A. Brunetti ,
G. E. Gigante ,
T. Takeda ,
Y. Itai  and
T. Akatsuka
D. V. Rao*
Affiliation:
Istituto di Matematica e Fisica, Universita di Sassari, Via Vienna 2, 07100 Sassari, Italy
R. Cesareo
Affiliation:
Istituto di Matematica e Fisica, Universita di Sassari, Via Vienna 2, 07100 Sassari, Italy
A. Brunetti
Affiliation:
Istituto di Matematica e Fisica, Universita di Sassari, Via Vienna 2, 07100 Sassari, Italy
G. E. Gigante
Affiliation:
Dipartimento di Fisica, Universita di Roma “La Sapienza”, Ple A. Moro 2 00185, Roma, Italy
T. Takeda
Affiliation:
Institute of Clinical Medicine, University of Tsukuba-shi, Ibaraki 305-8575, Japan
Y. Itai
Affiliation:
Institute of Clinical Medicine, University of Tsukuba-shi, Ibaraki 305-8575, Japan
T. Akatsuka
Affiliation:
Faculty of Engineering, Yamagata University, Yonezawa-shi, Yamagata 992-8510, Japan
*
dvrao@ssmain.uniss.it
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Abstract

A new approach is developed to estimate the geometrical factors, solid angle approximation and geometrical efficiency for a system with experimental arrangements using X-ray tube and secondary target as an excitation source in order to produce the nearly monoenergetic Kα radiation to excite the sample. The variation of the solid angle is studied by changing the radius and length of the collimators towards and away from the source and sample. From these values the variation of the total solid angle and geometrical efficiency is deduced and the optimum value is used for the experimental work.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 20 , Issue 1 , October 2002 , pp. 69 - 74
Copyright
© EDP Sciences, 2002

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References

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Rao, D.V., Cesareo, R., Gigante, G.E., Appl. Radiat. Isot. 49, 835 (1998) CrossRef
Rao, D.V., Cesareo, R., Gigante, G.E., Phys. Scripta 55, 265 (1997) CrossRef
Steyn, J.J., Andrews, D.G., Diximer, M., Nucl. Instrum. Methods 74, 123 (1969) CrossRef
R.Di Pola, C. Berche, in Traite Medicine Nucleaire, edited by G. Meyniel et al. (Flammarion, Paris, 1975)
R.N. Beck, in: Medical Radioisotope Scanning (IAEA, Vienna, 1984), Vol. 1, p. 35
Rao, D.V., Seltzer, S.M., Hubbell, J.H., Cesareo, R., Brunetti, A., Gigante, G.E., SPIE 4142, 124 (2000)