scholarly journals Electron Impact Ionisation of the Ground State of He+

1988 ◽  
Vol 41 (5) ◽  
pp. 693
Author(s):  
KK Mukherjee ◽  
PS Mazumdar ◽  
S Brajamani
Keyword(s):  
Total Cross Section ◽  
Energy Range ◽  
Electron Impact ◽  
Cross Section ◽  
Ground State ◽  
Distorted Wave ◽  
Impact Ionisation ◽  
Good Agreement

Electron impact ionisation of the ground state of He+ is studied by using the distorted wave polarised orbital (DWPO) method in the energy range 61�2-272�0 eV. The present results for the total cross section are in good agreement with the measured values.

Total cross section for electron-impact ionization from the ground state of atomic hydrogen using the distorted-wave polarized orbital method

1988 ◽  
Vol 66 (5) ◽  
pp. 399-401 ◽  
Author(s):  
K. K. Mukherjee ◽  
P. S. Mazumdar ◽  
S. Brajamani
Keyword(s):  
Total Cross Section ◽  
Electron Impact ◽  
Cross Section ◽  
Ground State ◽  
Atomic Hydrogen ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Orbital Method ◽  
Present Calculation ◽  
Distorted Wave

The total cross-section for electron-impact ionization from the ground state of atomic hydrogen is studied by using the distorted-wave polarized orbital method. In the present calculation we have taken into account the matrix elements arising from the distorted part of the target wave function. The present results are in good agreement with experimental findings.

scholarly journals Cross Section Ionization By Electron Impact Of Helium Like Ions

2021 ◽  
Author(s):  
Manel Hariz Belgacem ◽  
Elhabib Guedda ◽  
Haikel Jelassi
Keyword(s):  
Electron Impact ◽  
Cross Section ◽  
Cross Sections ◽  
Ground State ◽  
The Cross ◽  
State 1 ◽  
Unstable States ◽  
Good Agreement

<sub></sub> In this paper we present our calculation of the cross section ionization by electron impact of C V, N VI and O VII. Using the Flexible Atomic Code (FAC), we obtain the cross sections for the ionization of these ions from the ground state 1<sup>1</sup>S, and from the unstable states 2<sup>1</sup>S and 2<sup>3</sup>S. Our results are in good agreement with those based on the Coulomb Born (CB) approximation and the available measurements.

PHOTOPRODUCTION OF π0π+ ON THE PROTON AND DEUTERON AT Eγ = 0.7 - 1.5 GeV

2010 ◽  
Vol 19 (05n06) ◽  
pp. 1197-1204 ◽  
Author(s):  
A. MUSHKARENKOV ◽  
V. BELLINI ◽  
J. P. BOCQUET ◽  
L. CASANO ◽  
A. D'ANGELO ◽  
...  
Keyword(s):  
Total Cross Section ◽  
Energy Range ◽  
Invariant Mass ◽  
Cross Section ◽  
Photon Energy ◽  
Mass Spectra ◽  
Photon Energy Range ◽  
Free Proton ◽  
Preliminary Results ◽  
Good Agreement

The preliminary results obtained by the GRAAL collaboration for the π0π+ photoproduction on the free and quasi-free proton (deuteron) at Eγ = 0.7-1.5 GeV are presented. The total cross section of the γp → π0π+n reaction and invariant mass spectra for the π+π0, π+n and π0n systems are presented in the photon energy range from 0.7 to 1.5 GeV. These results are in good agreement with the 2π-MAID calculations.

Distorted wave calculation of the electron impact ionization cross section of the ground state of atomic hydrogen

1996 ◽  
Vol 74 (5-6) ◽  
pp. 226-229 ◽  
Author(s):  
Th. Subodh Chandra Singh ◽  
N. Ranjit Singh ◽  
N. C. Deb ◽  
S. C. Mukherjee ◽  
M. Babuyaima ◽  
...  
Keyword(s):  
Electron Impact ◽  
Cross Section ◽  
Ground State ◽  
Atomic Hydrogen ◽  
Impact Ionization ◽  
Wave Model ◽  
Electron Impact Ionization ◽  
Incident Electron Energy ◽  
Distorted Wave ◽  
Wave Calculation

The total cross section and single differential cross section in energy for the electron impact ionization of the ground state of atomic hydrogen were computed using a distorted wave model. The incident electron energy range was 20–250 eV. The present results are compared with existing theoretical and experimental results.

DOUBLE PION PHOTOPRODUCTION EXPERIMENT AT LNS–TOHOKU

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2313-2316 ◽  
Author(s):  
◽  
H. KANDA ◽  
N. CHIGA ◽  
Y. FUJII ◽  
K. FUTATSUKAWA ◽  
...  
Keyword(s):  
Total Cross Section ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Pion Photoproduction ◽  
Total Cross Sections ◽  
Free Proton ◽  
Double Pion ◽  
The Cross

The total cross sections for the π+π− photoproduction on the deuteron were measured in an energy range of 0.8 to 1.1 GeV. The obtained total cross section for the quasi-free π+π− photoproduction on the deuteron was about 60 % of those on the free proton. The cross section for Δ++Δ− photoproduction was derived from the non-quasi-free π+π− photoproduction events. It was smaller than the previous data.

Molybdenum and AND Zirconium Neutron Total Cross Section Measurements in the Energy Range 0.5 TO 20 MeV

2011 ◽  
Vol 59 (2(3)) ◽  
pp. 1745-1748 ◽  
Author(s):  
M. J. Rapp ◽  
Y. Danon ◽  
F. J. Saglime ◽  
R. Bahran ◽  
R. C. Block ◽  
...  
Keyword(s):  
Total Cross Section ◽  
Energy Range ◽  
Cross Section ◽  
Neutron Total Cross Section

Absolute cross sections for D2 Lyman and Werner band excitation by controlled electron impact

1984 ◽  
Vol 62 (1) ◽  
pp. 1-9 ◽  
Author(s):  
K. Becker ◽  
J. W. McConkey
Keyword(s):  
Energy Range ◽  
Electron Impact ◽  
Cross Section ◽  
Cross Sections ◽  
Impact Energy ◽  
Emission Cross Section ◽  
Direct Excitation ◽  
The Cross ◽  
Impact Energies

We have studied the Lyman [Formula: see text] and Werner [Formula: see text] band emissions produced by 20–500-eV electrons incident on molecular deuterium, D2. Emission cross sections of (3.7 ± 0.9) × 10−17 cm2 for the B → X and (3.54 ± 0.74) × 10−17 cm2 for the C → X system have been determined at 100-eV impact energy. Cascading did not play an important role in the [Formula: see text] emission, but it was shown to affect the [Formula: see text] emission seriously, particularly for impact energies below 50 eV. We estimate the cross section for direct excitation of the [Formula: see text] state and the cascade cross section to be 2.95 × 10−17 and 0.75 × 10−17 cm2, at 100 eV respectively. The cascade cross section is 20 ± 10% of the total B → X emission cross section, and is essentially constant in the energy range 300–50 eV, but increases significantly for lower impact energies, e.g., to 40 ± 15% at 27.5 eV. The cross section for the atomic 2p → 1s Lyman α emission from D2 has also been measured and the value of 1.00 × 10−17 cm2 at 100 eV is 20% smaller than the cross section for Lyman α emission from H2.

The inner shell ionization of atoms by electron impact

1940 ◽  
Vol 36 (1) ◽  
pp. 43-52 ◽  
Author(s):  
E. H. S. Burhop ◽  
H. S. W. Massey
Keyword(s):  
Experimental Data ◽  
Electron Impact ◽  
Cross Section ◽  
Nickel Silver ◽  
Inner Shell Ionization ◽  
Good For ◽  
The Cross ◽  
Shell Ionization ◽  
Good Agreement

Calculations have been made of the cross-section for ionization of the inner shells of atoms by electron impact in the cases of the K-shells of nickel, silver, mercury and of the three L-shells of silver and mercury.The agreement with experiment is reasonably good for the K-shell ionization, but only fair in the case of the rather meagre experimental data available for the L-shell. The values obtained for the relative ionization in the K- and L-shells are in good agreement with those to be expected from experiment.

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