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.

The absolute cross section for photoionization of O2(1Δg)

1970 ◽  
Vol 18 (4) ◽  
pp. 523-531 ◽  
Author(s):  
I.D. Clark ◽  
R.P. Wayne
Keyword(s):  
Cross Section ◽  
Absolute Cross Section ◽  
The Absolute

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

Coherent analysis of 16O + 28Si excitation functions

1985 ◽  
Vol 63 (10) ◽  
pp. 1274-1277
Author(s):  
R. J. W. Hodgson
Keyword(s):  
Energy Range ◽  
Excitation Function ◽  
Energy Dependence ◽  
Cross Section ◽  
Elastic Cross Section ◽  
Excitation Functions ◽  
Extreme Sensitivity ◽  
The Cross

A prescription for separating the elastic cross section into its coherent and incoherent parts is used to gain more information about the excitation function at 90° and at 180°. Approximations become useless over most of the energy range owing to the extreme sensitivity of the cross section. Despite the apparent smooth energy dependence of the coherent and incoherent parts, interpolation does not generate the observed structure in the excitation functions.

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