نتایج جستجو برای: nuclear decay
تعداد نتایج: 305989 فیلتر نتایج به سال:
The computer code developed by our group some years ago for the evaluation of nuclear matrix elements, within the QRPA and PQRPA nuclear structure models, involved in neutrino-nucleus reactions, muon capture and β± processes, is extended to include also the nuclear double beta decay.
We discuss how detection of gamma-ray emission from the decay of r-process nuclei can improve our understanding of r-process nucleosynthesis. We Ðnd that a gamma-ray detector with a sensitivity of D10~7c cm~2 s~1 at keV may detect the emission from the decay of 125Sb, 137Cs, 144Ce, Ec B 100È700 155Eu, and 194Os produced in a future Galactic supernova. In addition, such a detector may determine ...
We use a deformed quasiparticle random phase approximation formalism to describe simultaneously the energy distributions of the single b Gamow-Teller strength and the two-neutrino double b decay matrix elements. Calculations are performed in a series of double b decay partners with A=48, 76, 82, 96, 100, 116, 128, 130, 136, and 150, using deformed Woods-Saxon potentials and deformed Skyrme Hart...
In the nuclear safety analysis, it is very important to be able to simulate the different transients that can occur in a nuclear power plant with a very high accuracy. The transient simulations involve both neutronic and thermalhydraulic calculations. One of the most used codes in nuclear industry is the TRAC-BF1 code, which has already been proved against different transients in many nuclear p...
The interest, the status and the perspectives of various experiments in neutron and nuclear beta-decay, muon-decay and pion-decays are discussed. The talk is segmented into a discussion of the decay-rates and of the energy-spectra and correlations. The impact on various scenarios of ”new physics” is briefly mentioned ; leftright symmetric models are discussed in more detail and the informations...
Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are supremely important techniques with numerous applications in almost all branches of science. However, until recently, NMR methodology was limited by the time constant T1 for the decay of nuclear spin magnetization through contact with the thermal molecular environment. Long-lived states, which are correlated quantum state...
The high expression of somatostatin receptors in many tumours, have made receptor scintigraphy with 111In-DTPA-Octreotide a widly used procedure in nuclear medicine. Despite its clinical success, some limitation and drawbacks of radiolabelling with 111In remain, especially those concerned with the cost, availability and physical decay properties of this radionuclide. 99mTc-EDDA/HYNIC-Tyr3...
Article history: Received 16 March 2016 Received in revised form 11 June 2016 Accepted 20 June 2016 Available online 23 June 2016 Editor: M. Cvetič We investigate meson’s spectrum, decay constant and form factor in a nuclear medium through holographic twoand three-point correlation functions. To describe a nuclear medium composed of protons and neutrons, we consider a hard wall model on the the...
Misquitta, Christine M., James Mwanjewe, Lin Nie, and Ashok K. Grover. Sarcoplasmic reticulum Ca2 pump mRNA stability in cardiac and smooth muscle: role of the 3 -untranslated region. Am J Physiol Cell Physiol 283: C560–C568, 2002. First published April 18, 2002; 10.1152/ ajpcell.00527.2001.—Stomach smooth muscle (SSM) and left ventricular muscle (LVM) express the sarco(endo)plasmic reticulum C...
Light proton-rich bound and unbound nuclei were produced by means of stripping reactions of secondary beams of Mg and Ne. The decays of the unbound nuclei Na have been measured by detecting their decay products Ne and one proton and by performing an invariant-mass reconstruction. For Na, the present work is the first measurement of its decay. As the decay scheme of this nucleus could not be det...
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