scholarly journals Atomic negative-ion-photodetachment cross-section and affinity measurements

1955 ◽  
Vol 55 (3) ◽  
pp. 165 ◽  
Author(s):  
Stephen J. Smith ◽  
Lewis M. Branscomb
Keyword(s):  
Cross Section ◽  
Negative Ion ◽  
Photodetachment Cross Section

Measurement of the photodetachment cross section of the negative ion of fluorine

1987 ◽  
Vol 35 (4) ◽  
pp. 1615-1620 ◽  
Author(s):  
S. Vacquié ◽  
A. Gleizes ◽  
M. Sabsabi
Keyword(s):  
Cross Section ◽  
Negative Ion ◽  
Photodetachment Cross Section

Photodetached electron spectrum of H- near a surface having spherical dent

2015 ◽  
Vol 14 (08) ◽  
pp. 1550063 ◽  
Author(s):  
Muhammad Haneef ◽  
Bakhtawar ◽  
Suneela Arif ◽  
Jehan Akbar ◽  
Nasrullah Shah
Keyword(s):  
Cross Section ◽  
Electron Flux ◽  
Focal Length ◽  
Negative Ions ◽  
Negative Ion ◽  
Concave Surface ◽  
Radius Of Curvature ◽  
Imaging Method ◽  
Surface Distance ◽  
Photodetachment Cross Section

The detached electron flux and photodetachment cross section are derived using the theoretical imaging method and quantum approach for system comprising of hydrogen negative ion ([Formula: see text]) placed near a surface having spherical dent. The dent is modeled like a spherical concave surface. It is observed that the spherical dent generates additional oscillatory and smooth structure in the detached electron flux and photodetachment cross section, respectively. The radius of curvature, inter-ion surface distance and the dent factor strongly manipulate the results. When the inter-ion surface distance is equal to the focal length of the concave surface, the detached electron flux and photodetachment cross section are not well behaved. The photodetachment cross section is also not well behaved for the inter-ion surface distance equal to the radius of curvature. The focus and center of curvature of the concave surface act as a spherical singularity. This study gives new understanding on the photodetachment of negative ions in the vicinity of concave surfaces.

scholarly journals Photodetachment spectrum of hydrogen negative ion near a spherical surface

2016 ◽  
Vol 94 (2) ◽  
pp. 226-230
Author(s):  
A. Afaq ◽  
A. Iqbal ◽  
A. Iftikhar ◽  
M. Asif
Keyword(s):  
Cross Section ◽  
Laser Light ◽  
Spherical Surface ◽  
Closed Orbit ◽  
Negative Ion ◽  
Classical Action ◽  
Zero Curvature ◽  
Photodetachment Cross Section ◽  
Orbit Theory ◽  
Closed Orbit Theory

The semi-classical closed orbit theory is applied to study photodetachment of H− near an elastic spherical surface for a z-polarized laser light. It is assumed that similar to the outgoing detached-electron waves from the source, waves propagate from an image of the source behind the surface. We then calculate the classical action for those trajectories that are perpendicular to the surface. The spherical effects in total photodetachment cross section are controlled by curvature κ of the surface. For zero curvature, our results match with the plane wall case while for a large curvature the results become the asymptotic value of the cross section recently published.

scholarly journals Photodetachment cross section of lithium negative ion

2009 ◽  
Vol 194 (2) ◽  
pp. 022096 ◽  
Author(s):  
J Jose ◽  
G B Pradhan ◽  
V Radojević ◽  
S T Manson ◽  
P C Deshmukh
Keyword(s):  
Cross Section ◽  
Negative Ion ◽  
Photodetachment Cross Section
Sign in / Sign up

Export Citation Format

Share Document