skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions

Abstract

L- and M-shell x-ray production cross sections have been measured for thin solid targets of neodymium, gadolinium, holmium, ytterbium, gold, and lead by 25-MeV /sub //sub <1/ /sub 6//sup 2/C/sup q//sup +/ (q = 4,5,6) and by 32-MeV /sub //sub <1/ /sub 8//sup 6/O/sup q//sup +/ (q = 5,7,8). The cross sections were determined from measurements made with thin targets (less than 2.25 ..mu..g/cm/sup 2/). For projectiles with one or two K-shell vacancies, the target x-ray production cross sections were found to be enhanced over those for projectiles without a K-shell vacancy. The sum of direct ionization to the continuum (DI) plus electron capture (EC) to the L,M,N,. . . shells and EC to the K shell of the projectile have been extracted from the data. The results are compared to the predictions of first Born theories, i.e., plane-wave Born approximation for DI and Oppenheimer-Brinkman-Kramers formula of Nikolaev for EC, and to the ECPSSR that accounts for energy loss and Coulomb deflection of the projectile as well as for relativistic and perturbed stationary states of inner-shell electrons.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Department of Physics, North Texas State University, Denton, Texas 76203
OSTI Identifier:
6117260
Resource Type:
Journal Article
Journal Name:
Phys. Rev. A; (United States)
Additional Journal Information:
Journal Volume: 36:8
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CARBON IONS; ION-ATOM COLLISIONS; GADOLINIUM; GOLD; HOLMIUM; LEAD; NEODYMIUM; OXYGEN IONS; YTTERBIUM; BORN APPROXIMATION; COMPARATIVE EVALUATIONS; CROSS SECTIONS; ION SPECTROSCOPY; L SHELL; M SHELL; MEV RANGE 10-100; X-RAY EMISSION ANALYSIS; ATOM COLLISIONS; CHARGED PARTICLES; CHEMICAL ANALYSIS; COLLISIONS; ELECTRONIC STRUCTURE; ELEMENTS; ENERGY RANGE; ION COLLISIONS; IONS; METALS; MEV RANGE; NONDESTRUCTIVE ANALYSIS; RARE EARTHS; SPECTROSCOPY; TRANSITION ELEMENTS; 640304* - Atomic, Molecular & Chemical Physics- Collision Phenomena

Citation Formats

Andrews, M C, McDaniel, F D, Duggan, J L, Miller, P D, Pepmiller, P L, Krause, H F, Rosseel, T M, Rayburn, L A, Mehta, R, Lapicki, G, and others, and. L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions. United States: N. p., 1987. Web. doi:10.1103/PhysRevA.36.3699.
Andrews, M C, McDaniel, F D, Duggan, J L, Miller, P D, Pepmiller, P L, Krause, H F, Rosseel, T M, Rayburn, L A, Mehta, R, Lapicki, G, & others, and. L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions. United States. https://doi.org/10.1103/PhysRevA.36.3699
Andrews, M C, McDaniel, F D, Duggan, J L, Miller, P D, Pepmiller, P L, Krause, H F, Rosseel, T M, Rayburn, L A, Mehta, R, Lapicki, G, and others, and. 1987. "L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions". United States. https://doi.org/10.1103/PhysRevA.36.3699.
@article{osti_6117260,
title = {L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions},
author = {Andrews, M C and McDaniel, F D and Duggan, J L and Miller, P D and Pepmiller, P L and Krause, H F and Rosseel, T M and Rayburn, L A and Mehta, R and Lapicki, G and others, and},
abstractNote = {L- and M-shell x-ray production cross sections have been measured for thin solid targets of neodymium, gadolinium, holmium, ytterbium, gold, and lead by 25-MeV /sub //sub <1/ /sub 6//sup 2/C/sup q//sup +/ (q = 4,5,6) and by 32-MeV /sub //sub <1/ /sub 8//sup 6/O/sup q//sup +/ (q = 5,7,8). The cross sections were determined from measurements made with thin targets (less than 2.25 ..mu..g/cm/sup 2/). For projectiles with one or two K-shell vacancies, the target x-ray production cross sections were found to be enhanced over those for projectiles without a K-shell vacancy. The sum of direct ionization to the continuum (DI) plus electron capture (EC) to the L,M,N,. . . shells and EC to the K shell of the projectile have been extracted from the data. The results are compared to the predictions of first Born theories, i.e., plane-wave Born approximation for DI and Oppenheimer-Brinkman-Kramers formula of Nikolaev for EC, and to the ECPSSR that accounts for energy loss and Coulomb deflection of the projectile as well as for relativistic and perturbed stationary states of inner-shell electrons.},
doi = {10.1103/PhysRevA.36.3699},
url = {https://www.osti.gov/biblio/6117260}, journal = {Phys. Rev. A; (United States)},
number = ,
volume = 36:8,
place = {United States},
year = {Thu Oct 15 00:00:00 EDT 1987},
month = {Thu Oct 15 00:00:00 EDT 1987}
}