Investigation of Screening Effect on L- sub shell X-ray Production Cross-Sections by Low Energy Proton for PIXE Application

P.K. Prajapati¹

1. Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, India.

Correspondence should be addressed to: pkpbhu13@gmail.com.

Section:Research Paper, Product Type: Isroset-Journal
Vol.6 , Issue.1 , pp.43-45, Feb-2018

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i1.4345

Online published on Feb 28, 2018

Copyright © P.K. Prajapati . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

View this paper at   Google Scholar | DPI Digital Library

XML View     PDF Download

How to Cite this Paper

507 Views    207 Downloads    230 Downloads

Abstract :
PIXE (Proton induced x-ray emission) by proton beam is important technique to find out qualitative and qualitative analysis of element present in the specimen. Quantity of the element directly related to x-ray production cross section. Many literature shows discrepancy between theoretical and experimental x-ray cross section. In this work, x-ray production cross section calculated by ECPSSR theory with 25% variation of screening constant for L sub- shell and compared with experimental measured data. Variation of screening constant suggested in literature and we have seen almost no effect in L shell x-ray cross-section.

Key-Words / Index Term :
PIXE, X-ray cross-section, ECPSSR, Screening Constant,Ionization cross-section

References :
[1] S.A.E. Johanson, J.L. Campbell, PIXE A Novel Technique for Elemental Analysis ,John Wiley &Sons,1988.
[2] E. Batyrbekov,I.Gorlachev,I.Ivanov,A.Platov “K-, L- and M-shell x-ray production cross sections by 1–1.3 MeV protons”,Nuclear Instruments and Methods in Physics Research B vol. 325 pp. 84–88 , 2014.
[3] P.K.Prajapati,N.Sharma,CMajumder,SS.Tiwary,S.Chakraborty,H.P.Sharma “Investigation of Screening effect on production of K-shell X-ray by low energy Proton” Proceedings of the DAE Symposium on Nuclear Physics India,Vol. 60, pp. 484-485, 2015.
[4] J.d.Garcia “Ineer –Shell Ionization by Proton impact”, Physical Review A Vol. 1 pp. 280-285, 1970.
[5] W. Brandt and G. Lapicki , “Energy-loss effect in inner-shell Coulomb ionization by heavy charged particles”, Physical Review A Vol. 23, pp. 1717-1727, 1970.Phys, 1981.
[6] Grzegorz Lapicki and William Losonsky, “Coulomb deflection in ion-atom collisions” ,Physical Review A Vol.20 pp. 481-490 ,1979
[7] H.Paul Z. Phys.D-Atoms,Molecule and Clusters Vol.4, pp. 249-252,1987.
[8] Campbell J.L. . “Fluorescence yields and Coster-Kronig probabilities for the atomic L subshells”, Atomic Data and Nuclear Data Tables, Vol. 85, pp. 291-315, 2003.
[9] Krause M.O. “Atomic Radiative and Radiationless Yields for K and L shells”J.Phys. Chem. Ref. Data, Vol.8 No.2, pp.307-327, 1979.
[10] Vladimir Horvat “ ERCS08:A FORTRAN program equipped with a Window graphics user interface that calculate ECPSSR cross section for the removal of atomic electron” ,Computer Physics communication Vol. 180, pp. 995-1003, 2009.
[11] S.I. Salem, “ Experimental K and L shell relative emission rate”,Atomic and Nuclear data tables, Vol.14, pp. 91-109 ,1974.
[12] J.H. Scofield “ Relativistic Hartree-Slater values for K and L X-ray emission rates”, Atomic and Nuclear data tables,Vol.14, pp. 121-137 1974.
[13] Cohen D.D., Harrigan M. “K shell and L shell Ionization cross section by proton and helium ions calculated in the ECPSSR theory”. Atomic and Nuclear data tables, Vol.33, pp. 255 ,1985.
[14] P.K.Prajapati “L shell and M shell X-ray Production Cross-section for Pb and Au by low energy Proton impact” Proceedings of the DAE Symposium on Nuclear Physics India. Vol. 59, pp. 580-581, 2014.
[15] J.P.J.Driessen,F.J.M. de van de Weijer,M.J Zonneveld,L.M.T.Somer,M.F.M.Janssens,H.C.W.Beijerinck,and b.J.Verhaar “Polarization Effect in the Ionization Cross section for Collision of Ne**with Ar:a sensitive Probe for Locking Phenomena”
Physical Review A Vol.62.No.20, pp.2369-2372. 1989.