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Article
Study of \(N=50\) gap evolution around \(Z=32\) : new structure information for \({}^{82}\) Ge
Medium spin states of light N = 50 isotones have been populated using fast neutron-induced fission of \({}^{232}\) ...
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Article
Open AccessIn-beam \(\gamma \) -ray spectroscopy of \(^{94}\) Ag
A recoil-beta-tagging experiment has been performed to study the excited \(T=0\) T ...
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Article
Open AccessLifetime measurements in \(^{182}\hbox {Pt}\) using \(\gamma \) – \(\gamma \) fast-timing
The level lifetimes of the \(2_1^+\) 2 1 + ...
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Article
Angular momentum generation in nuclear fission
When a heavy atomic nucleus splits (fission), the resulting fragments are observed to emerge spinning1; this phenomenon has been a mystery in nuclear physics for over 40 years2,3. The internal generation of typic...
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Article
Experimental evidence for low-lying quadrupole isovector excitation of \(^{208}\) Po
We present the results from an experiment dedicated to measure the lifetime of the \(2^+_2\) 2 2 + state, candidate for the one-phonon mixed-symmetry state, of \(^{208}\) 208 Po. This nucleus was stud...
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Article
Benchmarking the PreSPEC@GSI experiment for Coulex-multipolarimetry on the \(\pi (p_{3/2})\rightarrow \pi (p_{1/2})\) spin-flip transition in \(^{85}\hbox {Br}\)
A first performance test of the Coulomb excitation multipolarimetry (Coulex-multipolarimetry) method is presented. It is based on a \(^{85}\hbox {Br}\,\pi p_{3/2}\rightarrow \pi p_{1/2}\)85Brπp3/2→πp1/2 spin-flip...
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Article
Open AccessSearch for proton emission of the isomeric \(\mathbf {10^+}\) state in \(\mathbf {^{54}}\)Ni
Several experiments were conducted at the 10 MV Van-de-Graaff tandem accelerator at the Institute of Nuclear Physics, Cologne, to detect proton emission from the isomeric 6457-keV \(10^+\)10+ state in $$^{54}\hbo...
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Article
Open AccessElectromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg
The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic stru...
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Article
Lifetime measurement of excited states in 46Ti
The level lifetimes of the yrast 21+, 41+ and 61+ states and an upper limit of the lifetime of the 81+ state in 46Ti have been measured with high accuracy exploiting the recoil distance Doppler-shift method (RDDS...
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Article
A revised B(E2;2+ 1 \( \rightarrow\) 0+ 1) value in the semi-magic nucleus 210Po
The lifetimes of the \( 2^+_1\) 2 ...
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Article
Collective 2+ 1 excitations in 206Po and 208,210Rn
In the present study, \(B(E2; 2^{+}_{1}\rightarrow 0^{+}_{1})\) ...
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Article
Low-energy Coulomb excitation of 62Fe and 62Mn following in-beam decay of 62Mn
Sub-barrier Coulomb excitation was performed on a mixed beam of 62Mn and 62Fe, following in-trap β − decay of 62Mn at REX-ISOLDE, CERN. The trap** and charge breeding times were ...
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Article
Studies of pear-shaped nuclei using accelerated radioactive beams
There is strong circumstantial evidence that certain heavy, unstable atomic nuclei are ‘octupole deformed’, that is, distorted into a pear shape. This contrasts with the more prevalent rugby-ball shape of nucl...
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Article
Open AccessThe Miniball spectrometer
The Miniball germanium detector array has been operational at the REX (Radioactive ion beam EXperiment) post accelerator at the Isotope Separator On-Line facility ISOLDE at CERN since 2001. During the last decade...
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Article
Open AccessCoulomb excitation of 107Sn
The radioactive isotope 107Sn was studied using Coulomb excitation at the REX-ISOLDE facility at CERN. This is the lightest odd-Sn nucleus examined using this technique. The reduced transition probability of the ...
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Article
Superallowed Gamow–Teller decay of the doubly magic nucleus 100Sn
The shell structure of atomic nuclei is associated with ‘magic numbers’ and originates in the nearly independent motion of neutrons and protons in a mean potential generated by all nucleons. During β+-decay, a pr...
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Article
Coulomb excitation of the odd-odd isotopes 106, 108In
The low-lying states in the odd-odd and unstable isotopes 106, 108In have been Coulomb excited from the ground state and the first excited isomeric state at the REX-ISOLDE facility at CERN. With the additional da...
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Article
Evidence for an isomeric 3/2- state in 53Co
The fragmentation of a 550MeV/u primary beam of 58Ni on a 9Be target has been used to measure time- and energy-correlated γ decays following the implantation of event-by-event discriminated secondary fragments in...
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Article
Isomeric decay studies around 204Pt and 148Tb
Relativistic energy projectile fragmentation of 208Pb has been used to produce a range of exotic nuclei. The nuclei of interest were studied by detecting delayed gamma rays following the decay of isomeric stat...
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Article
Exciting isomers from the first stopped-beam RISING campaign
First results are reported from a major new initiative of experiments, which focus on nuclear structure studies at extreme isospin values by means of isomer spectroscopy. The experiments represent the first pa...
