Single capture and transfer ionization in collisions of Clq+ projectile ions incident on helium

K. L. Wong; W. Wu; E. C. Montenegro; I. Ben-Itzhak; C. L. Cocke; J. P. Giese; P. Richard

doi:10.1016/0168-583X(95)00339-8

Single capture and transfer ionization in collisions of Cl^q+ projectile ions incident on helium

K. L. Wong
, W. Wu
, E. C. Montenegro
, I. Ben-Itzhak
, C. L. Cocke
, J. P. Giese
, P. Richard

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The Kansas State University linac has been used to measure the ratio of the cross sections for the processes of transfer ionization (TI) and single capture (SC) for 2 MeV/amu Cl^q+ where q = 7, 9, 13, 14, and 15 projectile ions incident on a helium target. The ratio was determined using a helium gas jet target by measuring coincidences between projectile-ion and recoil-ion final charge states. The σ_TI σ_SC for Cl^q+ were compared to measurements of bare F⁹⁺ and hydrogenlike F⁸⁺ and O⁷⁺ taken at the same velocity. The ratios deviate from a q² scaling which is predicted in the perturbative regime. This deviation is attributed to screening by the projectile electrons for low q = 7 and 9, and to the collision being non-perturbative for high q. A possible saturation effect in the ratio was observed for q ∼ 14.

Original language	English
Pages (from-to)	72-74
Number of pages	3
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	99
Issue number	1-4
DOIs	https://doi.org/10.1016/0168-583X(95)00339-8
State	Published - May 5 1995
Externally published	Yes

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Wong, K. L., Wu, W., Montenegro, E. C., Ben-Itzhak, I., Cocke, C. L., Giese, J. P., & Richard, P. (1995). Single capture and transfer ionization in collisions of Cl^q+ projectile ions incident on helium. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 99(1-4), 72-74. https://doi.org/10.1016/0168-583X(95)00339-8

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title = "Single capture and transfer ionization in collisions of Clq+ projectile ions incident on helium",

abstract = "The Kansas State University linac has been used to measure the ratio of the cross sections for the processes of transfer ionization (TI) and single capture (SC) for 2 MeV/amu Clq+ where q = 7, 9, 13, 14, and 15 projectile ions incident on a helium target. The ratio was determined using a helium gas jet target by measuring coincidences between projectile-ion and recoil-ion final charge states. The σTI σSC for Clq+ were compared to measurements of bare F9+ and hydrogenlike F8+ and O7+ taken at the same velocity. The ratios deviate from a q2 scaling which is predicted in the perturbative regime. This deviation is attributed to screening by the projectile electrons for low q = 7 and 9, and to the collision being non-perturbative for high q. A possible saturation effect in the ratio was observed for q ∼ 14.",

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doi = "10.1016/0168-583X(95)00339-8",

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T1 - Single capture and transfer ionization in collisions of Clq+ projectile ions incident on helium

AU - Wong, K. L.

AU - Wu, W.

AU - Montenegro, E. C.

AU - Ben-Itzhak, I.

AU - Cocke, C. L.

AU - Giese, J. P.

AU - Richard, P.

PY - 1995/5/5

Y1 - 1995/5/5

N2 - The Kansas State University linac has been used to measure the ratio of the cross sections for the processes of transfer ionization (TI) and single capture (SC) for 2 MeV/amu Clq+ where q = 7, 9, 13, 14, and 15 projectile ions incident on a helium target. The ratio was determined using a helium gas jet target by measuring coincidences between projectile-ion and recoil-ion final charge states. The σTI σSC for Clq+ were compared to measurements of bare F9+ and hydrogenlike F8+ and O7+ taken at the same velocity. The ratios deviate from a q2 scaling which is predicted in the perturbative regime. This deviation is attributed to screening by the projectile electrons for low q = 7 and 9, and to the collision being non-perturbative for high q. A possible saturation effect in the ratio was observed for q ∼ 14.

AB - The Kansas State University linac has been used to measure the ratio of the cross sections for the processes of transfer ionization (TI) and single capture (SC) for 2 MeV/amu Clq+ where q = 7, 9, 13, 14, and 15 projectile ions incident on a helium target. The ratio was determined using a helium gas jet target by measuring coincidences between projectile-ion and recoil-ion final charge states. The σTI σSC for Clq+ were compared to measurements of bare F9+ and hydrogenlike F8+ and O7+ taken at the same velocity. The ratios deviate from a q2 scaling which is predicted in the perturbative regime. This deviation is attributed to screening by the projectile electrons for low q = 7 and 9, and to the collision being non-perturbative for high q. A possible saturation effect in the ratio was observed for q ∼ 14.

UR - https://www.scopus.com/pages/publications/5344239537

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-4

ER -

Single capture and transfer ionization in collisions of Cl^q+ projectile ions incident on helium

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