Search results for "nucleus"
showing 10 items of 1803 documents
Lifetime measurements of excited states in $^{163}$W and the implications for the anomalous B(E2) ratios in transitional nuclei
2019
Grahn, Tuomas/0000-0002-6255-2279; Herzan, Andrej/0000-0002-6736-7638; Cullen, Dave/0000-0002-0041-1606; Barber, Liam/0000-0002-7409-9352; Keatings, James Michael/0000-0003-4271-8021; SAYGI, BAHADIR/0000-0001-5406-506X; Greenlees, Paul/0000-0002-5986-5274; Spagnoletti, Pietro/0000-0002-7674-989X; Parr, Edward/0000-0001-6204-4461; Bondili, S Nara Singh/0000-0002-4096-2429
Better the devil you know? Guidelines for insightful utilization of nrDNA ITS in species-level evolutionary studies in plants.
2006
The internal transcribed spacers (ITS) of the nuclear ribosomal 18S–5.8S–26S cistron continue to be the most popular non-plastid region for species-level phylogenetic studies of plant groups despite the early warnings about their potential Xaws, which may ultimately result in incorrect assumptions of orthology. It has been gradually realized that the alternative target regions in the nuclear genome (lowcopy nuclear genes, LCNG) are burdened with similar problems. The consequence is that, to date, developing useful LCNG for nonmodel organisms requires an investment in time and eVort that hinders its use as a real practical alternative for many labs. It is here argued that ITS sequences, desp…
Neutrinoless ββ nuclear matrix elements using isovector spin-dipole Jπ=2− data
2018
Ca48+Bk249Fusion Reaction Leading to ElementZ=117: Long-Livedα-DecayingDb270and Discovery ofLr266
2014
The superheavy element with atomic number Z=117 was produced as an evaporation residue in the 48Ca+249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allowed measuring decays of single atomic nuclei with half-lives between sub-μs and a few days. Two decay chains comprising seven α decays and a spontaneous fission each were identified and are assigned to the isotope 294-117 and its decay products. A hitherto unknown α-decay branch in 270Db (Z=105) was observed, which populated the new isotope 266Lr (Z=103). The identification of the long-liv…
Electron Scattering Experiments on Light Nuclei
2020
In this contribution we discuss double-polarised quasi-elastic electron scattering from \({}^{3}\mathrm {He}\) and \({}^{12}\mathrm {C}\). For these nuclei precise data from recent experiments at Jefferson Lab and Mainz have become available, accompanied by a very strong theoretical effort dedicated to understanding these nuclei. The double polarisation experiments presented here offer insight into some of the details of the nuclear structure that could not be accessed by traditional cross-section measurements. The new experimental results show only rough agreement with the calculations and indicate that we do not yet fully understand the structure of these nuclei and nucleon dynamics insid…
Intruder states in even-even neutron-rich Pd isotopes
1998
The decays of 112Rh g and 112Rh m obtained as on-line mass separated fission products have been investigated by standard β and γ spectroscopic techniques and γ-γ angular correlations. Low-lying 0+ and 2+ states are identified in the daughter nucleus 112Pd. Systematics suggests the existence of an intruder band which is the lowest in 110Pd, i.e. two neutrons before the midshell.
Study of nucleus-nucleus potential by combined measurement of deep sub-barrier fusion and cluster decay
2004
Shell-model study of partial muon-capture rates in light nuclei
1998
Abstract The nuclear shell model is used to study ordinary muon capture of light nuclei in the p, sd and p-sd shell-model spaces. Several well-established two-body interactions are applied to calculate the involved nuclear matrix elements and the emerging results are compared with each other. The resulting theoretical partial muon-capture rates are compared with experimental data and their stability against different model spaces and interactions studied. The effects of the induced-pseudoscalar strength, C p , on the capture rates is discussed. The relation between the allowed partial muon capture rates and the Gamow-Teller strength function is stressed.
The beta-decay half-life of 48 130 Cd82 and its importance for astrophysicalr-process scenarios
1986
The s-decay half-life of130Cd has been measured and its importance as N=82 ‘waiting-point’ nucleus for astrophysical rapid neutron capture (r−) process scenarios is discussed.
Pushing in-beam gamma-ray spectroscopy to the shores of the Island of stability
2013
One hundred years after the discovery of the atomic nucleus by Ernest Rutherford, the nuclear chart has been extended far from stability, providing more and more stringent tests for nuclear models. Nuclei at the extremes of the chart are produced with extremely low production cross-sections and one has to ingeniously upgrade the best experimental devices in order to reduce the observational limits.