W. B. Walters
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View article: Beta-decay Half Lives beyond $^{54}$Ca: A Systematic Survey of Decay Properties approaching the Neutron Dripline
Beta-decay Half Lives beyond $^{54}$Ca: A Systematic Survey of Decay Properties approaching the Neutron Dripline Open
In an experiment performed at the Facility for Rare Isotope Beams (FRIB) using the FRIB Decay Station initiator (FDSi), 15 new half lives of isotopes near $^{54}$Ca were measured. A new method of extracting lifetimes from experimental data…
View article: Universal Effective Charges in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>s</mml:mi><mml:mi>d</mml:mi></mml:mrow></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>f</mml:mi><mml:mi>p</mml:mi></mml:mrow></mml:math> Shells
Universal Effective Charges in the and Shells Open
The 247-keV state in ^{54}Sc, populated in the β decay of ^{54}Ca, is reported here as a nanosecond isomer with a half-life of 26.0(22) ns. The state is interpreted as the 1^{+} member of the πf_{7/2}⊗νf_{5/2} spin-coupled multiplet, which…
View article: Improving the predictive power of empirical shell-model Hamiltonians
Improving the predictive power of empirical shell-model Hamiltonians Open
We present two developments which enhance the predictive power of empirical shell-model Hamiltonians for cases in which calibration data are sparse. A recent improvement in the ab initio derivation of effective Hamiltonians leads to a much…
View article: Proton Shell Gaps in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>28</mml:mn></mml:mrow></mml:math> Nuclei from the First Complete Spectroscopy Study with FRIB Decay Station Initiator
Proton Shell Gaps in Nuclei from the First Complete Spectroscopy Study with FRIB Decay Station Initiator Open
The first complete measurement of the β-decay strength distribution of _{17}^{45}Cl_{28} was performed at the Facility for Rare Isotope Beams (FRIB) with the FRIB Decay Station Initiator during the second FRIB experiment. The measurement i…
View article: Index
Index Open
The Handbook on Governmentality discusses the development of an interdisciplinary field of research, focusing on Michel Foucault’s post-foundationalist concept of governmentality and the ways it has been used to write genealogies of modern…
View article: Triaxiality and the nature of low-energy excitations in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ge</mml:mi><mml:mprescripts/><mml:none/><mml:mn>76</mml:mn></mml:mmultiscripts></mml:math>
Triaxiality and the nature of low-energy excitations in Open
The deformation properties of the low-lying states in 76Ge have been investigated following a safe energy Coulomb excitation measurement with the GRETINA tracking array and CHICO2 heavy-ion counter at the ATLAS accelerator facil…
View article: Multistep Coulomb excitation of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ni</mml:mi><mml:mprescripts/><mml:none/><mml:mn>64</mml:mn></mml:mmultiscripts></mml:math>: Shape coexistence and nature of low-spin excitations
Multistep Coulomb excitation of : Shape coexistence and nature of low-spin excitations Open
The structure of 64Ni, the heaviest stable Ni isotope, has been investigated via high-statistics, multistep safe Coulomb excitation to search for shape coexistence, a phenomenon recently observed in neutron-rich 66Ni …
View article: Migration, Solidarity and the Limits of Europe
Migration, Solidarity and the Limits of Europe Open
View article: Migration, Solidarity and the Limits of Europe
Migration, Solidarity and the Limits of Europe Open
View article: Migration, Solidarity and the Limits of Europe
Migration, Solidarity and the Limits of Europe Open
View article: First <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-decay spectroscopy of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>In</mml:mi><mml:mprescripts/><mml:none/><mml:mn>135</mml:mn></mml:mmultiscripts></mml:math> and new <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>-decay branches of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>In</mml:mi><mml:mprescripts/><mml:none/><mml:mn>134</mml:mn></mml:mmultiscripts></mml:math>
First -decay spectroscopy of and new -decay branches of Open
The beta decay of the neutron-rich In-134 and In-135 was investigated experimentally in order to provide new insights into the nuclear structure of the tin isotopes with magic proton number Z = 50 above the N = 82 shell. The beta-delayed g…
View article: Minor keywords of political theory: Migration as a critical standpoint
Minor keywords of political theory: Migration as a critical standpoint Open
Coordinated and Edited by:
\nN De Genova, M Tazzioli
\n
\nCo-Authored by:
\nClaudia Aradau, Brenna Bhandar, Manuela Bojadzijev, Josue David Cisneros, N De Genova, Julia Eckert, Elena Fontanari, Tanya Golash-Boza, Jef Huysmans, Shahram Khos…
View article: Shape Coexistence at Zero Spin in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ni</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>64</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> Driven by the Monopole Tensor Interaction
Shape Coexistence at Zero Spin in Driven by the Monopole Tensor Interaction Open
The low-spin structure of the semimagic ^{64}Ni nucleus has been considerably expanded: combining four experiments, several 0^{+} and 2^{+} excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo she…
View article: Multinucleon transfer in the interaction of 977 MeV and 1143 MeV <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Hg</mml:mi><mml:mprescripts/><mml:none/><mml:mn>204</mml:mn></mml:mmultiscripts></mml:math> with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Pb</mml:mi><mml:mprescripts/><mml:none/><mml:mn>208</mml:mn></mml:mmultiscripts></mml:math>
Multinucleon transfer in the interaction of 977 MeV and 1143 MeV with Open
A previous study of symmetric collisions of massive nuclei has shown that current models of multinucleon transfer (MNT) reactions do not adequately describe the transfer product yields. To gain further insight into this problem, we have me…
View article: Longitudinal Wobbling Motion in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Au</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>187</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>
Longitudinal Wobbling Motion in Open
The rare phenomenon of nuclear wobbling motion has been investigated in the nucleus ^{187}Au. A longitudinal wobbling-bands pair has been identified and clearly distinguished from the associated signature-partner band on the basis of angul…
View article: Probing the role of proton cross-shell excitations in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ni</mml:mi><mml:mprescripts/><mml:none/><mml:mn>70</mml:mn></mml:mmultiscripts></mml:math> using nucleon knockout reactions
Probing the role of proton cross-shell excitations in using nucleon knockout reactions Open
© 2019 American Physical Society. The neutron-rich Ni isotopes have attracted attention in recent years because of the occurrence of shape or configuration coexistence. We report on the difference in population of excited final states in N…
View article: Proton decay of 108I and its significance for the termination of the astrophysical rp-process
Proton decay of 108I and its significance for the termination of the astrophysical rp-process Open
Employing the Argonne Fragment Mass Analyzer and the implantation-decay-decay correlation technique, a weak 0.50(21)% proton decay branch was identified in 108I for the first time. The 108I proton-decay width is consistent with a hindered …
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi>β</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> decay study of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Mn</mml:mi><mml:mprescripts/><mml:none/><mml:mn>66</mml:mn></mml:mmultiscripts><mml:mtext>−</mml:mtext><mml:mmultiscripts><mml:mi>Fe</mml:mi><mml:mprescripts/><mml:none/><mml:mn>66</mml:mn></mml:mmultiscripts><mml:mtext>−</mml:mtext><mml:mmultiscripts><mml:mi>Co</mml:mi><mml:mprescripts/><mml:none/><mml:mn>66</mml:mn></mml:mmultiscripts><mml:mtext>−</mml:mtext><mml:mmultiscripts><mml:mi>Ni</mml:mi><mml:mprescripts/><mml:none/><mml:mn>66</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> decay chain
decay study of the decay chain Open
Background: Shell evolution can impact the structure of the nuclei and lead to effects such as shape coexistence. The nuclei around Ni68 represent an excellent study case, however, spectroscopic information of the neutron-rich, Z<28 nuclei…
View article: Revised B(E3) transition rate and structure of the 3− level in 96Zr
Revised B(E3) transition rate and structure of the 3− level in 96Zr Open
View article: Novel <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Δ</mml:mi><mml:mi>J</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math> Sequence in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ge</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>78</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>: Possible Evidence for Triaxiality
Novel Sequence in : Possible Evidence for Triaxiality Open
A sequence of low-energy levels in _{32}^{78}Ge_{46} has been identified with spins and parity of 2^{+}, 3^{+}, 4^{+}, 5^{+}, and 6^{+}. Decays within this band proceed strictly through ΔJ=1 transitions, unlike similar sequences in neighbo…
View article: Nucleon correlations and the structure of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Zn</mml:mi></mml:mrow><mml:mrow><mml:mn>41</mml:mn></mml:mrow><mml:none/><mml:mprescripts/><mml:mrow><mml:mn>30</mml:mn></mml:mrow><mml:mrow><mml:mn>71</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>
Nucleon correlations and the structure of Open
View article: Quadrupole collectivity beyond <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>50</mml:mn></mml:mrow></mml:math> in neutron-rich Se and Kr isotopes
Quadrupole collectivity beyond in neutron-rich Se and Kr isotopes Open
We report $B(E2;{0}_{1}^{+}\ensuremath{\rightarrow}{2}_{n}^{+})$ strengths for the neutron-rich $^{88,90}\mathrm{Kr}$ and $^{86}\mathrm{Se}$ isotopes from intermediate-energy Coulomb excitation. The electric quadrupole transition strengths…
View article: Lifetime measurements in {sup 118,120}Xe
Lifetime measurements in {sup 118,120}Xe Open
Using the picosecond lifetime system at UNISOR, we have measured the lifetimes for the first 2{sup +} levels in {sup 118,120}Xe to be 64{plus_minus}4 ps and 63{plus_minus}6 ps, respectively. The resulting B(E2;O{sub 1}{sup +} {yields} 2{su…
View article: Modeling multi-nucleon transfer in symmetric collisions of massive nuclei
Modeling multi-nucleon transfer in symmetric collisions of massive nuclei Open
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-ray spectroscopy of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Tl</mml:mi><mml:mprescripts/><mml:none/><mml:mn>209</mml:mn></mml:mmultiscripts></mml:math>
-ray spectroscopy of Open
Here, states in 209TI were populated using a multi-nucleon transfer reaction with a 136Xe beam impinging on a thick 208Pb target at E = 785 MeV. The beam was pulsed at 825 ns intervals in order to perform i…
View article: Direct Lifetime Measurements of the Excited States in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ni</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>72</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>
Direct Lifetime Measurements of the Excited States in Open
The lifetimes of the first excited 2^{+} and 4^{+} states in ^{72}Ni were measured at the National Superconducting Cyclotron Laboratory with the recoil-distance Doppler-shift method, a model-independent probe to obtain the reduced transiti…
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-soft<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Ba</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>146</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>and the role of nonaxial shapes at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>≈</mml:mo><mml:mn>90</mml:mn></mml:mrow></mml:math>
-softand the role of nonaxial shapes at Open
Low-spin states in the neutron-rich, N=90 nuclide Ba146 were populated following β decay of Cs146, with the goal of clarifying the development of deformation in barium isotopes through delineation of their nonyrast structures. Fission frag…
View article: New low-energy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>0</mml:mn><mml:mo>+</mml:mo></mml:msup></mml:math>state and shape coexistence in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ni</mml:mi><mml:mprescripts/><mml:none/><mml:mn>70</mml:mn></mml:mmultiscripts></mml:math>
New low-energystate and shape coexistence in Open
We report that in recent models, the neutron-rich Ni isotopes around N=40 are predicted to exhibit multiple low-energy excited 0+ states attributed to neutron and proton excitations across both the N=40 and Z=28 shell gaps. In <…
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">Xe</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>136</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">Pb</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>208</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>reaction: A test of models of multinucleon transfer reactions
reaction: A test of models of multinucleon transfer reactions Open
The yields of over 200 projectile-like fragments (PLFs) and target-like fragments (TLFs) from the interaction of (${E}_{\mathrm{c}.\mathrm{m}.}=450$ MeV) $^{136}\text{Xe}$ with a thick target of $^{208}\text{Pb}$ were measured using Gammas…
View article: The $^{136}$Xe + $^{208}$Pb reaction: A test of models of multi-nucleon transfer reactions
The $^{136}$Xe + $^{208}$Pb reaction: A test of models of multi-nucleon transfer reactions Open
The yields of over 200 projectile-like fragments (PLFs) and target-like fragments (TLFs) from the interaction of (E$_{c.m.}$=450 MeV) $^{136}$Xe with a thick target of $^{208}$Pb were measured using Gammasphere and off-line $γ$-ray spectro…