scholarly journals Excitation of the 9·50 MeV (9/2+) State of 13C in Intermediate Energy Scattering Experiments

1982 ◽  
Vol 35 (1) ◽  
pp. 9
Author(s):  
L Rickus ◽  
SF Collins ◽  
KA Amos ◽  
BM Spicer ◽  
GG Shute ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Angular Distribution ◽  
Differential Cross Section ◽  
Inelastic Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Total Angular Momentum ◽  
Intermediate Energy ◽  
Large Asymmetry ◽  
Mev Protons

The differential cross section for the inelastic scattering of 135 MeV protons leading to the9/2+ (9·5 MeV) state in 13C has been measured. Microscopic DWBA analyses show that the angular distribution is well described by a pure (or nearly pure) 1p3/2 to 1d5/2 neutron transition with a total angular momentum transfer of 4, a description which is consistent with the previously observed large asymmetry in inelastic π+ and π- scattering to this state.

scholarly journals An Analysis of Inelastic Scattering to the 2+ State in 54Fe at 1·409 MeV

1973 ◽  
Vol 26 (5) ◽  
pp. 575 ◽  
Author(s):  
R Smith ◽  
K Amos
Keyword(s):  
Differential Cross Section ◽  
Inelastic Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Distorted Wave ◽  
Polarization Model ◽  
Core Polarization ◽  
Spin Flip ◽  
Asymmetry Data ◽  
Mev Protons

The differential cross section, spin-flip probability amplitude, and asymmetry for the inelastic scattering of19�6 MeV protons to the 2+ state in 54Feat 1�409 MeV are analysed. The antisymmetrized distorted wave approximation is used to evaluate the scattering amplitudes in which the reaction mechanism is represented by a generalized core polarization model. Good fits are obtained to the differential cross section and spin-flip probability data. The exchange core polarization contributions are shown to be essential to obtain such fits. However, the asymmetry data cannot be fitted simultaneously, and this failure demonstrates the limitations of the current collective model representation of the core polarization process

Differential cross-section measurements in positron–argon collisions

1996 ◽  
Vol 74 (7-8) ◽  
pp. 505-508 ◽  
Author(s):  
R. M. Finch ◽  
Á. Kövér ◽  
M. Charlton ◽  
G. Laricchia
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Inelastic Scattering ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Coupling Effect ◽  
Channel Coupling ◽  
Scattering Cross

Differential cross sections for elastic scattering and ionization in positron–argon collisions as a function of energy (40–150 eV) are reported at 60°. Of particular interest is the energy range 55–60 eV, where earlier measurements by the Detroit group found a drop in the elastic-scattering cross section of a factor of 2. This structure has been tentatively attributed to a cross channel-coupling effect with an open inelastic-scattering channel, most likely ionization. Our results indicate that ionization remains an important channel over the same energy range and only begins to decrease at an energy above 60 eV.

scholarly journals Influence of Neutral Currents on Electron and Gamma Polarizations in the Processe+N→e′+N+γ

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
N. V. Samsonenko ◽  
Adamou Ousmane Manga ◽  
Almoustapha Aboubacar ◽  
Aboubacar Moussa
Keyword(s):  
Differential Cross Section ◽  
Inelastic Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Longitudinal Polarization ◽  
Neutral Currents ◽  
Photon Polarization ◽  
Weak Neutral Currents ◽  
Yield Information ◽  
Electron And Photon

The differential cross section of electron inelastic scattering by nuclei followed byγradiation is calculated using the multipole decomposition of the hadronic currents and by taking into account the longitudinal polarization of the initial electron and the circular polarization of theγradiation. We performed the analysis of the angular and energy dependence of the degree of electron and photon polarization which can yield information on values of weak neutral currents parameters.

Polarization and Differential Cross Section for Elastic Scattering of 40-MeV Protons. II

1967 ◽  
Vol 156 (4) ◽  
pp. 1207-1218 ◽  
Author(s):  
M. P. Fricke ◽  
E. E. Gross ◽  
B. J. Morton ◽  
A. Zucker
Keyword(s):  
Elastic Scattering ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Mev Protons

SCATTERING AMPLITUDE ZERO IN dū→γH−

1988 ◽  
Vol 03 (12) ◽  
pp. 1199-1203 ◽  
Author(s):  
XIAO-GANG HE ◽  
H. LEW
Keyword(s):  
Angular Distribution ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Scattering Amplitude ◽  
Higgs Bosons ◽  
Factorization Property ◽  
High Energies ◽  
Charged Higgs ◽  
Charged Higgs Bosons

In models with physical charged Higgs bosons, the angular distribution of dū→γH− exhibits a factorization property. The differential cross section has a zero at the scattering cos -1(-⅓) in the γH− C.M. frame. The processes [Formula: see text] are also studied. It is found, at high energies, that the contribution of the sea quarks are significant enough to wash the zero away.

Elastic and inelastic scattering for the elements 12C, 6Li, and 40Ca using the reaction KN

2011 ◽  
Vol 89 (7) ◽  
pp. 799-807
Author(s):  
R. Arceo ◽  
A. Sandoval ◽  
E. Belmont ◽  
C. Alvarez
Keyword(s):  
Differential Cross Section ◽  
Total Cross Section ◽  
Inelastic Scattering ◽  
Nuclear Structure ◽  
Cross Section ◽  
Differential Cross ◽  
Optical Potential ◽  
Momentum Range ◽  
Elastic And Inelastic Scattering ◽  
Elastic Differential Cross Section

The study of the nuclear structure for the elements 12C, 40Ca, and 6Li has been performed in the momentum range from 0 to 0.8 GeV/c by using K+N phase shifts. An optical potential is used to calculate the elastic differential cross section and total cross section for K+ scattering from 12C, 40Ca, and 6Li. Comparison with previous experiments shows better results for the elements 6Li and 40Ca and fair agreement for the element 12C.

Elastische Streuung von Protonen an Bleikernen bei 19,2 GeV/c

1963 ◽  
Vol 18 (11) ◽  
pp. 1182-1184
Author(s):  
H. Going
Keyword(s):  
Angular Distribution ◽  
Differential Cross Section ◽  
Proton Beam ◽  
Cross Section ◽  
Differential Cross ◽  
Forward Direction ◽  
Nuclear Scattering

The very well collimated 19,2 GeV/c CERN proton-beam hits a Pb-target. Small emulsions behind the target measure the angular distribution of scattered protons between 0.1° — 0.6°. This distribution yields a radius of interaction R=5.6 ·10-13 cm for Pb nuclei. The differential cross section for elastic nuclear scattering in the forward direction is found to be σ(0°) =2.15 ·105 barn/ster. These results are compared with those obtained by other authors.

scholarly journals Reactive Scattering of Oxygen Atoms With Bromine Molecules

1988 ◽  
Vol 9 (4-6) ◽  
pp. 265-276 ◽  
Author(s):  
N. C. Firth ◽  
N. W. Keane ◽  
D. J. Smith ◽  
R. Grice
Keyword(s):  
Angular Distribution ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Rotational Motion ◽  
Correlation Time ◽  
Cross Correlation ◽  
Translational Energy ◽  
Reactive Scattering ◽  
Centre Of Mass

Reactive scattering of O atoms with Br2 molecules has been studied at an initial translational energy E~35 kJ mol−1 using cross-correlation time-of-flight analysis with resolution improved over previous measurements. The centre-of-mass differential cross section peaks in the forward and backward directions with a higher product translational energy for backward Scattering. The angular distribution traced at the peak of the product velocity distribution peaks more sharply in the forward than the backward direction but the angular distribution of product flux shows a distribution which is more nearly symmetrical about θ = 90°. The observed scattering is attributed to a triplet OBrBr complex intermediate with a lifetime which is shorter than the period of overall rotation of the axis of the heavy BrBr diatomic but which is long compared with the period of vibrational and rotational motion of the light O atom.

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