A comparison between N2and Ar for the absolute value and the energy dependence of the cross section for the fine-structure transition K(4P1/2to 4P3/2) as studied in crossed beam experiments

1980 ◽  
Vol 13 (23) ◽  
pp. 4589-4597 ◽  
Author(s):  
J M Mestdagh ◽  
J Cuvellier ◽  
J Berlande ◽  
A Binet ◽  
P de Pujo
Keyword(s):  
Fine Structure ◽  
Energy Dependence ◽  
Cross Section ◽  
Structure Transition ◽  
Absolute Value ◽  
The Absolute ◽  
The Cross

scholarly journals The Dynamic Collective Model Interpretation of the Photoneutron Cross Section of 181Ta

1973 ◽  
Vol 26 (5) ◽  
pp. 585 ◽  
Author(s):  
RS Hicks ◽  
BM Spicer
Keyword(s):  
Fine Structure ◽  
Excitation Energy ◽  
Cross Section ◽  
Neutron Detection ◽  
Collective Model ◽  
High Excitation ◽  
Absolute Value ◽  
Model Interpretation ◽  
Quadrupole Resonance ◽  
The Cross

The cross section for photoneutron production in 181Ta has been measured from threshold to 28� 8 MeV using bremsstrahlung and direct neutron detection. Integrated between these limits, the absolute value of the cross section has been determined to be 2 '47 �O' 35 MeV. b. An examination of the cross section variation with excitation energy reveals the existence of the giant quadrupole resonance lying on the high excitation edge of the dipole peak. This provides additional evidence for the validity of the dynamic collective model. The present data do not support the existence of extensive fine structure below 17 MeV, as proposed by Ishkhanov et al. (1969).

Electrical octupole Coulomb excitation in rhodium

1957 ◽  
Vol 239 (1219) ◽  
pp. 487-493 ◽  
Keyword(s):  
Energy Dependence ◽  
Cross Section ◽  
Isomeric State ◽  
Coulomb Excitation ◽  
Absolute Cross Section ◽  
The Absolute ◽  
The Cross ◽  
Octupole Excitation

The electric octupole excitation of the 40 keV isomeric state in 103 Rh has been observed with protons of energies 700 to 1200 keV. The energy dependence of the cross-section is consistent with that predicted by the W. K. B. treatment of Alder & Winther. The absolute cross-section is about three times that expected theoretically. Possible explanations for this discrepancy are suggested.

Measurement of the translational energy dependence of the cross section for the reaction of Sr+CH3I→SrI+CH3 from 0.1 – 1.0 eV

1991 ◽  
Vol 176 (6) ◽  
pp. 499-503 ◽  
Author(s):  
Qi-Xun Xu ◽  
R. Scott Mackay ◽  
F.J. Aoiz ◽  
Mark A. Quesada ◽  
Patrick J. Grunberg ◽  
...  
Keyword(s):  
Energy Dependence ◽  
Cross Section ◽  
Translational Energy ◽  
The Cross

A measurement of the cross section for production of He + (2 S ) ions by electron impact excitation of ground state helium ions

1966 ◽  
Vol 290 (1420) ◽  
pp. 74-93 ◽  
Keyword(s):  
Plane Wave ◽  
Cross Section ◽  
Cross Sections ◽  
Absolute Magnitude ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Close Coupling ◽  
Born Cross Section ◽  
The Absolute ◽  
The Cross

A crossed beams method has been used to measure the cross section for the production of He + (2 S ) by electrons incident upon He + (1 S ) in the energy range from threshold to 750 eV. The cross section was measured in arbitrary units with an accuracy of ± 5 % and at the higher energies its energy dependence is in close agreement with that calculated by means of the plane-wave Born approximation. Consequently the cross section has been normalized to the plane-wave Born cross section at energies between 435 and 750 eV to obtain the absolute magnitude. An independent estimate of the absolute magnitude was made to with in ± 30 % using only the experimental parameters, and the absolute cross sections given by the two methods agree within the experimental uncertainties. The normalized cross section is compared with cross sections given by the close-coupling approximation and various Coulomb-Born approximations. At the lower energies the normalized cross section is considerably smaller than any of the theoretical values, but the measurements are consistent with the existence of a finite cross section at threshold if the energy spread of the electron beam is taken in to account.

Energy dependence of the cross section of the nuclear reaction O16(γ, n)O15

1961 ◽  
Vol 23 ◽  
pp. 513-517 ◽  
Author(s):  
L. Keszthelyi ◽  
I. Berkes ◽  
I. Demeter ◽  
I. Fodor
Keyword(s):  
Nuclear Reaction ◽  
Energy Dependence ◽  
Cross Section ◽  
The Cross

Maximum in the translational energy dependence of the cross section for the Na+CH3I→NaI+CH3 reaction

1984 ◽  
Vol 81 (12) ◽  
pp. 5725-5729 ◽  
Author(s):  
V. Saez Rabanos ◽  
E. Verdasco ◽  
V. J. Herrero ◽  
A. Gonzalez Ureña
Keyword(s):  
Energy Dependence ◽  
Cross Section ◽  
Translational Energy ◽  
The Cross
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