Alpha decay widths of excited states of16O

2010 ◽  
Vol 37 (3) ◽  
pp. 035103 ◽  
Author(s):  
P J Haigh ◽  
M Freer ◽  
N I Ashwood ◽  
T Bloxham ◽  
N Curtis ◽  
...  
Keyword(s):  
Excited States ◽  
Alpha Decay ◽  
Decay Widths

LX-ray Spectra and E2 Internal Conversion Coefficients in Radon and Radium

1973 ◽  
Vol 28 (10) ◽  
pp. 1635-1641 ◽  
Author(s):  
A. G. de Pinho ◽  
M. Weksler
Keyword(s):  
Excited States ◽  
Internal Conversion ◽  
Electric Quadrupole ◽  
Alpha Decay ◽  
X Ray ◽  
Internal Conversion Coefficients ◽  
Conversion Coefficients ◽  
Good Agreement

The X-ray spectra resulting from the internal conversion of electric quadrupole transitions following the alpha decay of Th230 and Ra226 were analysed with a Si (Li) spectrometer. From the knowledge of the Coster-Kronig and fluorescence yields, the internal conversion coefficients of the E2 transitions from the first excited states in Ra226 and Rn222 could be deduced. Results are in good agreement with theoretical values.

scholarly journals Measurement of α and neutron decay widths of excited states ofC14

2008 ◽  
Vol 78 (1) ◽  
Author(s):  
P. J. Haigh ◽  
N. I. Ashwood ◽  
T. Bloxham ◽  
N. Curtis ◽  
M. Freer ◽  
...  
Keyword(s):  
Excited States ◽  
Neutron Decay ◽  
Decay Widths

scholarly journals Astrophysical relevance of the low-energy dipole strength of 206Pb

2018 ◽  
Vol 178 ◽  
pp. 04003
Author(s):  
A.P. Tonchev ◽  
N. Tsoneva ◽  
S. Goriely ◽  
C. Bhatia ◽  
C.W. Arnold ◽  
...  
Keyword(s):  
Excited States ◽  
Experimental Information ◽  
Neutron Separation Energy ◽  
Resonance Fluorescence ◽  
Photon Beams ◽  
Dipole Strength ◽  
Nuclear Resonance Fluorescence ◽  
Decay Widths ◽  
Linearly Polarized ◽  
Important Branch

The dipole strength of 206Pb was studied below the neutron separation energy using photon scattering experiments at the HIGS facility. Utilizing the technique of nuclear resonance fluorescence with 100% linearly-polarized photon beams, the spins, parities, branching ratios and decay widths of excited states in 206Pb from 4.9 - 8.1 MeV have been measured. The new experimental information is used to reliably predict the neutron capture cross section of 205Pb, an important branch point nucleus along the s-process path of nucleosynthesis.

Calculation of Alpha-Decay Widths for Light Lead Isotopes

1988 ◽  
Vol 7 (3) ◽  
pp. 209-212 ◽  
Author(s):  
A Insolia ◽  
R. J Liotta ◽  
E Maglione
Keyword(s):  
Lead Isotopes ◽  
Alpha Decay ◽  
Decay Widths

Alpha-decay widths of neutron-deficient francium and astatine isotopes

1974 ◽  
Vol 230 (3) ◽  
pp. 380-392 ◽  
Author(s):  
P. Hornshøj ◽  
P.G. Hansen ◽  
B. Jonson
Keyword(s):  
Alpha Decay ◽  
Decay Widths

Alpha decay of even–even nuclei in the region to the ground state and excited states of daughter nuclei

2011 ◽  
Vol 850 (1) ◽  
pp. 34-52 ◽  
Author(s):  
K.P. Santhosh ◽  
Sabina Sahadevan ◽  
Jayesh George Joseph
Keyword(s):  
Excited States ◽  
Ground State ◽  
Alpha Decay

scholarly journals Radiative Decay Widths of Ground and Excited States of Vector Charmonium and Bottomonium

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Hluf Negash ◽  
Shashank Bhatnagar
Keyword(s):  
Mass Spectrum ◽  
Excited States ◽  
Mass Spectra ◽  
Reasonable Agreement ◽  
Radiative Decay ◽  
Decay Constants ◽  
Two Photon ◽  
Quantum Numbers ◽  
Decay Widths ◽  
Input Parameters

We study the radiative decay widths of vector quarkonia for the process of J/ψ(nS)→ηc(nS)γ and Υ(nS)→ηb(nS)γ (for principal quantum numbers n=1,2,3) in the framework of Bethe-Salpeter equation under the covariant instantaneous ansatz using a 4×4 form of BSE. The parameters of the framework were determined by a fit to the mass spectrum of ground states of pseudoscalar and vector quarkonia, such as ηc, ηb, J/ψ, and Υ. These input parameters so fixed were found to give good agreements with data on mass spectra of ground and excited states of pseudoscalar and vector quarkonia, leptonic decay constants of pseudoscalar and vector quarkonia, two-photon decays, and two-gluon decays of pseudoscalar quarkonia in our recent paper. With these input parameters so fixed, the radiative decay widths of ground (1S) and excited (2S,3S) states of heavy vector quarkonia (J/Ψ and Υ) are calculated and found to be in reasonable agreement with data.

Alpha-decay widths and equivalence of optical potentials

1985 ◽  
Vol 63 (9) ◽  
pp. 1253-1257 ◽  
Author(s):  
M. L. Chaudhury ◽  
S. K. Agrawal
Keyword(s):  
Rare Earth ◽  
Coulomb Potential ◽  
Alpha Decay ◽  
Exchange Term ◽  
Heavy Nuclei ◽  
Optical Potentials ◽  
Decay Widths ◽  
Static Part ◽  
Good Agreement

Decay widths and relative intensities of the alpha spectra of some rare-earth and heavy nuclei are calculated, taking the barrier, as in the previous treatments, to be the usual Coulomb potential superposed by a nonlocal alpha–nucleus potential with an exchange term. For the static part of the barrier, different forms of optical potentials are now used, and calculated relative intensities are in good agreement with the observed values. It is found that the exchange term is important in the odd-parity transitions, and the different optical potentials are equivalent for the cases considered.

scholarly journals Development of a Monte-Carlo Evaporation Code for Multiple-Fragment Emission

2021 ◽  
Vol 12 ◽  
pp. 136
Author(s):  
N. G. Nicolis
Keyword(s):  
Monte Carlo ◽  
Excitation Energy ◽  
Excited States ◽  
Compound Nucleus ◽  
S Wave ◽  
Intermediate Mass ◽  
Wave Approximation ◽  
Decay Widths ◽  
Study Case ◽  
Multiple Fragment

An extended Hauser-Feshbach approach has been employed in a multi-step Monte-Carlo evaporation code designed to study the de-excitation of highly excited compound nuclei. The code is intended to account for emission of light particles ($\gamma$, n, $^{1,2,3}$H, $^{3-6}$He) and intermediate mass fragments in their ground and excited states (particle-bound or unbound). As a study case, we consider the decay of the compound nucleus $^{120}$Te$^*$ at excitation energy 100, 200 and 300 MeV. First chance decay widths are compared with treatments based on the Weisskopf and the s-wave approximation. Preliminary calculations are compared with experimental isotopic yields of intermediate mass fragments emitted in E/A = 50 MeV $^{4}$He + $^{116,124}$Sn $\rightarrow$ $^{120,128}$Te$^*$ reactions.

scholarly journals ALPHA-DECAY WIDTHS OF {sup 20}Ne.

1971 ◽  
Author(s):  
A Arima ◽  
S Yoshida
Keyword(s):  
Alpha Decay ◽  
Decay Widths
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