Tables of attenuation coefficients for angular distribution of gamma rays from partially aligned nuclei

Mateosian, E. der; Sunyar, A.W.

doi:10.1016/0092-640x(74)90007-2

Cited by 98 publications

(38 citation statements)

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“…where a 2 and a 4 are the angular distribution coefficients and the H 2 and H 4 coefficients depend on the initial and final spin and the mixing ratio, δ [20,21].…”

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

“…(4) by calculating the angular distribution coefficients a 2 , a 4 and the H 2 , H 4 functions for each value of the multipole mixing ratio δ using the formalism given in Refs. [20,21,23]. The calculation of theoretical polarization requires two inputs, viz., the width of the m-state distribution and the mixing ratios.…”

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

“…Polarization depends significantly on the distribution of the nuclear state over its magnetic substates. When the alignment is partial, the angular distribution coefficients for complete alignment [23] have to be multiplied with the attenuation coefficients as formulated by Der Mateosian and Sunyar [21], which depend on the factor σ/J where σ is the width of the distribution of the m-states, assuming a Gaussian distribution [23]. The choice of σ/J was made following the simultaneous analysis of the R DCO and ∆ IP DCO values for several transitions of known spin and parity.…”

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

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Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

et al. 2009

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We report the first observation of high-spin states in nuclei in the vicinity of the "island of inversion", populated via the 18 O+ 18 O fusion reaction at an incident beam energy of 34 MeV.The fusion reaction mechanism circumvents the limitations of non-equilibrated reactions used to populate these nuclei. Detailed spin-parity measurements in these difficult to populate nuclei have been possible from the observed coincidence anisotropy and the linear polarization measurements.The spectroscopy of 33,34 P and 33 S is presented in detail along with the results of calculations within the shell model framework.

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“…where a 2 and a 4 are the angular distribution coefficients and the H 2 and H 4 coefficients depend on the initial and final spin and the mixing ratio, δ [20,21].…”

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

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Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

et al. 2009

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“…In this investigation, we explore the σ spreading width and a 4 values using: 1) the der Mateosian, Sunyar [2], and Yamazaki [3] (MSY) Atomic Data and Nuclear Data Tables tables, 2) the Hauser-Feshbach code CINDY [4,5] with either an optical model parameter set or T l j transmission coefficients from TALYS [6], and 3) experimental measurements of γ -ray angular distributions. …”

Section: Calculationsmentioning

confidence: 99%

“…The tables of der Mateosian, and Sunyar [2], and Yamazaki [3] (MSY) may be used to 'fit' γ -ray angular distributions if computer codes are not available to perform the angular momentum algebra. This approach is an empirical technique, where decays from known levels are used to judge the appropriate value of σ .…”

Section: Msy Tablesmentioning

confidence: 99%

Inspection of⁵⁶Feγ-Ray angular distributions as a function of incident neutron energy using optical model approaches

et al. 2017

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Abstract. Neutron inelastic scattering cross sections measured directly through (n,n) or deduced from γ -ray production cross sections following inelastic neutron scattering (n,n γ ) are a focus of basic and applied research at the University of Kentucky Accelerator Laboratory (www.pa.uky.edu/accelerator). For nuclear data applications, angle-integrated cross sections are desired over a wide range of fast neutron energies. Several days of experimental beam time are required for a data set at each incident neutron energy, which limits the number of angular distributions that can be measured in a reasonable amount of time. Approximations can be employed to generate cross sections with a higher energy resolution, since at 125 o , the a 2 P 2 term of the Legendre expansion is identically zero and the a 4 P 4 is assumed to be very small. Provided this assumption is true, a single measurement at 125 o would produce the γ -ray production cross section. This project tests these assumptions and energy dependences using the codes CINDY/SCAT and TALYS/ECIS06/SCAT. It is found that care must be taken when interpreting γ -ray excitation functions as cross sections when the incident neutron energy is < 1000 keV above threshold or before the onset of feeding.

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Sensharma

2022

Wobbling Motion in Nuclei: Transverse, Longitudinal, and Chiral

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Tables of attenuation coefficients for angular distribution of gamma rays from partially aligned nuclei

Cited by 98 publications

References 2 publications

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

Inspection of⁵⁶Feγ-Ray angular distributions as a function of incident neutron energy using optical model approaches

Analysis

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Tables of attenuation coefficients for angular distribution of gamma rays from partially aligned nuclei

Cited by 98 publications

References 2 publications

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

Inspection of56Feγ-Ray angular distributions as a function of incident neutron energy using optical model approaches

Analysis

Contact Info

Product

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About

Inspection of⁵⁶Feγ-Ray angular distributions as a function of incident neutron energy using optical model approaches