Effect of Long-Range Final-State Forces on the Negative-Ion Photodetachment Cross Section near Threshold

1965 ◽  
Vol 137 (6A) ◽  
pp. A1668-A1672 ◽  
Author(s):  
Thomas F. O'Malley
Keyword(s):  
Long Range ◽  
Cross Section ◽  
Negative Ion ◽  
Final State ◽  
Photodetachment Cross Section ◽  
Near Threshold

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

Near threshold photodetachment cross section of negative atomic oxygen ions

2003 ◽  
Vol 12 (12) ◽  
pp. 1390-1394 ◽  
Author(s):  
Wu Jian-Hua ◽  
Yuan Jian-Min ◽  
Vo Ky Lan
Keyword(s):  
Cross Section ◽  
Atomic Oxygen ◽  
Oxygen Ions ◽  
Photodetachment Cross Section ◽  
Near Threshold

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.

Effects of electric fields on the photodetachment cross section of theH−ion near threshold

1988 ◽  
Vol 38 (11) ◽  
pp. 5628-5638 ◽  
Author(s):  
J. E. Stewart ◽  
H. C. Bryant ◽  
P. G. Harris ◽  
A. H. Mohagheghi ◽  
J. B. Donahue ◽  
...  
Keyword(s):  
Cross Section ◽  
Electric Fields ◽  
Photodetachment Cross Section ◽  
Near Threshold

Near-Threshold Photodetachment Cross Section of (SF6)n– Cluster Anions: The Ion Core Structure

2016 ◽  
Vol 120 (2) ◽  
pp. 221-226 ◽  
Author(s):  
Itamar Luzon ◽  
Maoz Nagler ◽  
Vijayanand Chandrasekaran ◽  
Oded Heber ◽  
Daniel Strasser
Keyword(s):  
Cross Section ◽  
Core Structure ◽  
Cluster Anions ◽  
Photodetachment Cross Section ◽  
Near Threshold

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.

Φ PRODUCTION IN pp COLLISIONS

2009 ◽  
Vol 24 (02n03) ◽  
pp. 564-567
Author(s):  
ALEXANDER SIBIRTSEV
Keyword(s):  
Cross Section ◽  
Final State Interaction ◽  
State Interaction ◽  
Rule Violation ◽  
Pp Collisions ◽  
Final State ◽  
Baryonic Resonance ◽  
Low Energies ◽  
Ozi Rule ◽  
Near Threshold

The data for near-threshold cross section for the reaction pp → ppɸ published by the DISTO and ANKE Collaboration are analyzed in order to evaluate the OZI ratio at low energies by taking into account corrections from the kinematics and the final-state interaction. Combining these new data with the few measurements available at higher energies the limit for the OZI rule violation is evaluated and the possible contribution from a five-quark baryonic resonance coupled to the ɸp system is estimated.

scholarly journals NEAR THRESHOLD η MESON PRODUCTION IN dp COLLISIONS

2007 ◽  
Vol 22 (02n03) ◽  
pp. 528-532 ◽  
Author(s):  
◽  
C. Piskor-Ignatowicz ◽  
J. Smyrski ◽  
P. Moskal ◽  
H.-H. Adam ◽  
...  
Keyword(s):  
Total Cross Section ◽  
Energy Dependence ◽  
Cross Section ◽  
Final State Interaction ◽  
Detection System ◽  
Meson Production ◽  
Deuteron Beam ◽  
Final State ◽  
System Data ◽  
Near Threshold

Preliminary results of recent measurements of the near threshold η meson production in the dp → dpη reaction are presented. The experiment was performed at the COSY-Juelich accelerator with the use of the COSY-11 detection system. Data were taken for three values of deuteron beam momenta corresponding to excess energies of 3.2, 6.1 and 9.2 MeV. The energy dependence of the total cross section confirms a strong effect of the final state interaction.

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