34 Result(s)
within
D Seweryniak
Nuclear Fusion
-
Article
Open AccessIdentification of \(\gamma\)-decaying resonant states in 26Mg and their importance for the astrophysical s process
The 22Ne(\( \alpha\)α, n) reaction is expected to provide the dominant neutron source for the weak s process in massive stars and intermediate-mass (IM) Asymptotic Giant Branch (AGB) stars. However, the production ...
-
Article
Open AccessAngle-integrated measurements of the 26Al (d, n)27Si reaction cross section: a probe of spectroscopic factors and astrophysical resonance strengths
Measurements of angle-integrated cross sections to discrete states in 27Si have been performed studying the 26Al (d, n) reaction in inverse kinematics by tagging states by their characteristic
-
Article
Spectroscopy of exotic 121, 123, 125Ag produced in fragmentation reactions
Excited states in the neutron-rich 121, 123, 125Ag were studied via the fragmentation of a 136Xe beam at 120MeV/nucleon in a thick 9Be target. The levels in 121Ag were populated in the
-
Article
Identification of \(\mathrm{\ensuremath J^{\pi} = 19/2^+}\) and \(\mathrm{\ensuremath 23/2^+}\) isomeric states in 127Sb
The nucleus \(\ensuremath {\rm ^{127}Sb}\) , which is on the neutron-rich periphery of the
-
Article
Extensive γ -ray spectroscopy of normally and superdeformed structures in 61 29Cu32
A largely extended experimental knowledge of the 61 29Cu32 nucleus has been obtained from three experiments. Excited states in 61Cu were produced via the fusion-evaporation reaction 28Si(36Ar, 3p)
-
Article
Re-evaluating reaction rates relevant to nova nucleosynthesis from a nuclear structure perspective
Conventionally, reaction rates relevant to nova nucleosynthesis are determined by performing the relevant proton capture reactions directly for stable species, or as has become possible more recently in invers...
-
Article
Gamma-ray spectroscopy of the doubly magic nucleus 56Ni
The doubly magic N = Z nucleus 56Ni has been investigated with two fusion-evaporation reactions; 40Ca(28Si, 3α)56Ni at a beam energy of 122MeV and 28Si(32S, 2p2n)56Ni at 130MeV. To detect γ-rays in coincidence wi...
-
Article
Investigating the rp-process with the Canadian Penning trap mass spectrometer
The Canadian Penning trap (CPT) mass spectrometer at the Argonne National Laboratory makes precise mass measurements of nuclides with short half-lives. Since the previous ENAM conference, many significant modi...
-
Article
New level information on Z = 51 isotopes, 111Sb60 and 134, 135Sb83, 84
New data for low-spin low-energy levels in 111,134,135Sb are presented. The observed structures are compared to shell-model calculations. The monopole shifts for the d5/2 and g7/2 single-proton levels and the spi...
-
Article
Particle-core coupling in the transitional proton emitters 145, 146, 147Tm
Excited states in 3 transitional proton emitters 145, 146, 147Tm were studied using the Gammasphere Ge array coupled with the Argonne Fragment Mass Analyzer. The 147Tm level scheme was extended and the unfavored ...
-
Article
Recoil decay tagging study of 146Tm
Gamma-rays from the odd-odd transitional proton-emitting nucleus 146Tm have been observed using the recoil-decay tagging technique. A rotational band similar to the h11/2 decoupled band in 147Tm has been observed...
-
Article
K-Mixing and fast decay of a seven-quasiparticle isomer in 179Ta
A seven-quasiparticle isomer with \(K^{\pi} = (49 /2^ + )\) and T 1/2 = 53 ( + 3 -7) ns...
-
Article
High-spin structure of \(N\simeq Z\) nuclei around the A = 72 region
High-spin states have been studied in 72Kr and 72Br using the 40 Ca + 40 Ca and 36 Ar + 40 Ca reactions at 164 and 1...
-
Article
The \(\pi h_{11/2}^{-1}\nu i_{13/2}^{-2}\) three-hole isomeric state and octupole core excitation in the 205 Tl nucleus
New high-spin states were identified in the 205Tl isotope produced in deep-inelastic heavy-ion reactions. The expected 29/2 + yrast state and 35/2- isomeric state with 235 ns half-life were located above the 2.6...
-
Article
Maximally aligned states in 99Ag
Excited states of 99Ag were populated via the 50Cr + 58Ni (261 MeV) reaction using the NORDBALL detector array equipped with charged-particle and neutron detector systems for reaction channel separation. On the b...
-
Article
New results on proton emission from odd-odd nuclei
78Kr beams were used to bombard 58Ni, 92Mo and 96Ru, producing three new, odd-odd, proton-emitting isotopes, 130Eu, 164mIr and 170Au. Preliminary experimental and theoretical results will be presented in this pa...
-
Article
Evolution of shapes in 59Cu
High-spin states in 59Cu were populated using the fusion-evaporation reaction 28Si + 40Ca at a beam energy of 122 MeV. The Gammasphere Ge-detector array in conjunction with the 4π charged-particle detector array ...
-
Article
High-resolution in-beam particle spectroscopy --New results on prompt proton emission from 58Cu
Prompt proton decay lines in 58Cu have been studied by means of high-resolution in-beam particle-γ coincidence spectroscopy using the GAMMASPHERE Ge-detector array in conjunction with a dedicated set of ancillary...
-
Article
The A = 51 mirror nuclei 51Fe and 51Mn
Eighteen previously unknown γ-ray transitions were identified in the T z = - 1/2 nucleus 51Fe following the fusion-evaporation reaction 32S(28Si,2α1n)51Fe. The level scheme reaches the fully aligned I π = 27/2- ...
-
Article
Behavior of intruder based states in light Bi and Tl isotopes: the study of 187Bi α decay
The excitation energies of the single-particle normal and intruder levels in both 183Tl and 187Bi were measured for the first time via the α decay of 187Bi produced in the 97Mo(92Mo,pn)187Bi reaction. The previo...
