Population Distributions. II. Charge-Exchange Capture by Protons Incident Upon Ground-State Atoms

1969 ◽  
Vol 180 (1) ◽  
pp. 146-155 ◽  
Author(s):  
John R. Hiskes
Keyword(s):  
Charge Exchange ◽  
Ground State ◽  
Population Distributions

Excited states of positronium in positron–hydrogen charge exchange

1978 ◽  
Vol 56 (5) ◽  
pp. 565-570 ◽  
Author(s):  
V. S. Kulhar ◽  
C. S. Shastry
Keyword(s):  
Excited States ◽  
Charge Exchange ◽  
Cross Sections ◽  
Ground State ◽  
Born Approximation ◽  
Energy Region ◽  
Hydrogen Charge ◽  
Positronium Formation ◽  
State Approximation ◽  
Higher Excited States

The two state approximation method for the study of the rearrangement collisions is applied to the process of positronium formation in excited states for positron–hydrogen charge exchange collisions. Differential and integrated cross sections are computed for positronium formation in 2S, 2P, and 3S excited states. The results obtained in the energy region 2 to 10 Ry are compared with positronium formation cross sections in ground state. Total positronium formation cross sections including the contributions of capture into all the higher excited states of positronium are also computed in the first Born approximation and the two state approximation in the energy region considered.

Observation of the 18Ne ground state in the pion double-charge-exchange reaction 18O(π+, π− 18Ne

1977 ◽  
Vol 69 (3) ◽  
pp. 301-303 ◽  
Author(s):  
C. Perrin ◽  
J.-P. Albanèse ◽  
R. Corfu ◽  
J.-P. Egger ◽  
P. Gretillat ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Charge Exchange ◽  
Ground State ◽  
Charge Exchange Reaction ◽  
Double Charge Exchange ◽  
Double Charge

The scattering of neutrons by deuterons at high energies

1951 ◽  
Vol 209 (1098) ◽  
pp. 380-396 ◽  
Keyword(s):  
Charge Exchange ◽  
Cross Sections ◽  
Ground State ◽  
Nuclear Potential ◽  
Angular Distributions ◽  
High Energies ◽  
Exchange Properties

Born’s approximation has been used to calculate total elastic and inelastic cross-sections and angular distributions for the scattering of neutrons by deuterons at incident energies of 100, 200 and 300 MeV. The nuclear potential has been taken to be a mixture of central and non-central interactions of the type √ 12 = I 12 (1 - 1/2 g + 1/2 g σ 1 σ 2 + γS 12 ) V(r) , where S 12 = r -2 3σ 1 . rσ 2 . r-σ 1 . σ 2 . Four types of isotopic factor I 12 , giving exchange properties of the neutral, charge exchange, symmetrical and Serber theories, have been investigated. The effect on the scattering of including the D wave of the ground state of the deuteron has been estimated.

scholarly journals Charge Exchange Collisions Involving Multielectron Atoms (Lithium and Sodium)

1968 ◽  
Vol 21 (6) ◽  
pp. 793 ◽  
Author(s):  
JG Lodge ◽  
RM May
Keyword(s):  
Excited State ◽  
Cross Section ◽  
Charge Exchange ◽  
Correction Factor ◽  
Ground State ◽  
Hydrogen Atoms ◽  
Sodium Atoms ◽  
The Cross ◽  
Multielectron Atoms

The cross section for forming both ground state and excited state hydrogen atoms by charge exchange between protons and lithium or sodium atoms is calculated. These calculations are performed using the Brinkman-Kramers approximation along with a multiplicative correction factor; the target lithium and sodium atoms are first described by simple "effective-Z" wavefunctions, and then the lithium case is treated more accurately both by including the inner electrons and by using a more accurate numerical lithium wavefunction.

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