R. E. Mihai
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View article: Isolated mixed-symmetry <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mn>2</mml:mn> <mml:mo>+</mml:mo> </mml:msup> </mml:math> state of the radioactive neutron-rich nuclide <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mi>Te</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mn>132</mml:mn> </mml:mmultiscripts> </mml:math>
Isolated mixed-symmetry state of the radioactive neutron-rich nuclide Open
The M 1 transition strengths between excited 2 + states of the neutron-rich, radioactive nuclide Te 132 was studied through direct lifetime measurements using the Doppler-shift attenuation method in a two-neutron transfer rea…
View article: Extending the time-over-threshold calibration of Timepix3 for spatial-resolved ion spectroscopy
Extending the time-over-threshold calibration of Timepix3 for spatial-resolved ion spectroscopy Open
Hybrid pixel detectors have a well-established array of applications ranging from particle physics to life sciences. The small dimensions of Timepix3 as well as its relatively low energetic expenses make it an intriguing option additionall…
View article: Search for Extra Yield in Hot Ni Isotopes Below the Giant Dipole Resonance
Search for Extra Yield in Hot Ni Isotopes Below the Giant Dipole Resonance Open
The high-energy \(\gamma \) rays from the Giant Dipole Resonance (GDR) decay of \(^{56,60,62}\mathrm {Ni}^{*}\) nuclei at finite temperature between approximately 1.5 and 2 MeV, produced in the \(^{32,34,36}\mathrm {S}+{^{24,26}\mathrm {Mg…
View article: Lifetime measurements in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Mo</mml:mi><mml:mprescripts/><mml:none/><mml:mn>102</mml:mn></mml:mmultiscripts></mml:math> interpreted in the interacting boson model and the X(5) symmetry
Lifetime measurements in interpreted in the interacting boson model and the X(5) symmetry Open
Lifetimes of low-lying excited states in Mo102 populated in the two-neutron transfer reaction Mo100(O18,O16)Mo102 were measured using the recoil distance Doppler shift method at the IFIN-HH Tandem accelerator. Lifetimes of the 21+, 02+, 41…
View article: Collective excitations in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Gd</mml:mi><mml:mprescripts/><mml:none/><mml:mn>150</mml:mn></mml:mmultiscripts></mml:math>
Collective excitations in Open
Mean lifetime measurements of low-lying yrast positive- and negative-parity states of Gd150 have been performed with the ROSPHERE array using the Ce140(C13,3n) fusion-evaporation reaction and the recoil distance Doppler shift method. Preci…
View article: Evaluation of Timepix2 in adaptive gain mode for stopped and penetrating position-sensitive ion spectroscopy
Evaluation of Timepix2 in adaptive gain mode for stopped and penetrating position-sensitive ion spectroscopy Open
We present the study of the response of a Timepix2 detector (256 × 256 pixels, pixel pitch 55 µm) with a 500 µm thick silicon sensor in laboratory measurements with α sources, charged particle beams of relativistic ion fragments at the Sup…
View article: Revealing the Nature of yrast States in Neutron-Rich Polonium Isotopes
Revealing the Nature of yrast States in Neutron-Rich Polonium Isotopes Open
Polonium isotopes having two protons above the shell closure at Z=82 show a wide variety of low-lying, high-spin isomeric states across the whole chain. The structure of neutron-deficient isotopes up to Po210 (N=126) is well established a…
View article: Search for shape coexistence in the Selenium isotopes near the N=50 neutron shell closure
Search for shape coexistence in the Selenium isotopes near the N=50 neutron shell closure Open
Aim of this contribution is the investigation of the shape coexistence phenomenon in the neutron-rich Selenium (Z=34) isotopes at or near the N=50 shell closure, by γ-ray spectroscopy. The 83 Se (N=49) and 84 Se (N=50) nuclei were populate…
View article: Experimental analysis of Schottky-barrier 4H-SiC-detector-response to fast neutrons: Comparison with Si and diamond detectors
Experimental analysis of Schottky-barrier 4H-SiC-detector-response to fast neutrons: Comparison with Si and diamond detectors Open
The response of 4H-SiC detectors to 17 MeV neutrons was experimentally analysed using detectors composed solely of carbon or silicon. The detectors were tested using three different neutron energies (14.5 MeV, 15 MeV and 17 MeV) at two dif…
View article: Lifetime measurement in 182W using the Differential Decay Curve Method
Lifetime measurement in 182W using the Differential Decay Curve Method Open
This work focuses on the lifetime measurement and spectroscopic properties of 182W. The mass region around this nucleus is of significant interest due to its unexplored nature and the presence of intriguing structural phenomena, including …
View article: Nuclear lifetime measurements around Z=50
Nuclear lifetime measurements around Z=50 Open
In the present work, a dedicated experimental study of the lifetimes of in Te and Sb isotopes was undertaken at the 9 MV Tandem accelerator at the IFIN-HH. Beams of 11B at 35 MeV impinged on a natAg target to populate the nuclei of interes…
View article: Search for Shape Coexistence in Selenium Isotopes Around \(N=50\)
Search for Shape Coexistence in Selenium Isotopes Around \(N=50\) Open
In the present contribution, the experimental investigation of the possible occurrence of the shape coexistence phenomenon in the 83Se (Z = 34, N = 49) and 84Se (Z = 34, N = 50) isotopes is presented. The aim of the experiment was to ident…
View article: ^{133}In: A Rosetta Stone for Decays of r-Process Nuclei.
^{133}In: A Rosetta Stone for Decays of r-Process Nuclei. Open
The β decays from both the ground state and a long-lived isomer of ^{133}In were studied at the ISOLDE Decay Station (IDS). With a hybrid detection system sensitive to β, γ, and neutron spectroscopy, the comparative partial half-lives (log…
View article: Nuclear Structure Investigations in Yb isotopes
Nuclear Structure Investigations in Yb isotopes Open
The medium-to-heavy mass ytterbium isotopes (70Yb) in the rare-earth mass region are known to be well-deformed nuclei, which can be populated to very high spin, and are predicted to exhibit interesting phenomena, such as shape coexistence.…
View article: New evidence for alpha clustering structure in the ground state band of 212Po
New evidence for alpha clustering structure in the ground state band of 212Po Open
Half-lives of the low-lying yrast states of 212Po have been measured using the delayed coincidence fast-timing method. We report on the first measurement of the 41+ half-life, as well as a new measurement of the 61+ half-life with improved…
View article: Investigation of 0<sup>+</sup> strength in <sup>150</sup>Sm using the (p,t) reaction
Investigation of 0<sup>+</sup> strength in <sup>150</sup>Sm using the (p,t) reaction Open
The aim of this investigation is to reveal the structure of 150 Sm by measuring for the first time a rather complete set of energy levels of this nucleus up to 4 MeV and determine the total angular momentum of the states. The study was car…
View article: Prompt Response Function (PRF) of Lifetime Measurement in the 2+ State of 192Os Nuclei Energy Levels from Triple-Gamma Coincidence Techniques
Prompt Response Function (PRF) of Lifetime Measurement in the 2+ State of 192Os Nuclei Energy Levels from Triple-Gamma Coincidence Techniques Open
The effective prompt response function full width at half maximum, PRF FWHM of 637 ps (obtained from the prompt gamma pairs of 477 keV and 700 keV associated with the yrast 2+ state in 206Po), and 1007 ps (obtained from the Compton gamma p…
View article: Detailed spectroscopy of doubly magic Sn-132
Detailed spectroscopy of doubly magic Sn-132 Open
The structure of the doubly magic Sn-132(50)82 has been investigated at the ISOLDE facility at CERN, populated both by the beta(-) decay of In-132 and beta(-)-delayed neutron emission of In-133. The level scheme of Sn-13(2) is greatly expa…
View article: Shape transitions between and within Zr isotopes
Shape transitions between and within Zr isotopes Open
The Zirconium isotopes across the N=56,58 neutron subshell closures have been of special interest since years, sparked by the near doubly-magic features of 96 Zr and the subsequent rapid onset of collectivity with a deformed ground-state …
View article: Preliminary results of proton inelastic scattering on 57Fe
Preliminary results of proton inelastic scattering on 57Fe Open
International audience
View article: Signatures for a nuclear quantum phase transition from <i>E</i> <sub>0</sub> and <i>E</i> <sub>2</sub> observables in Gd isotopes
Signatures for a nuclear quantum phase transition from <i>E</i> <sub>0</sub> and <i>E</i> <sub>2</sub> observables in Gd isotopes Open
Nuclei are complex quantum objects due to complex nucleon-nucleon interactions. They can undergo rather rapid changes in structure as a function of nucleon number. A well known region of such a shape transition is the rare-earth region aro…
View article: Investigation of Low-lying States in $^{133}$Sn Populated in the $\beta $ Decay of $^{133}$In Using Isomer-selective Laser Ionization
Investigation of Low-lying States in $^{133}$Sn Populated in the $\beta $ Decay of $^{133}$In Using Isomer-selective Laser Ionization Open
Excited states in the neutron-rich isotope Sn-133 were studied via the beta decay of In-133. Isomer selective ionization using the ISOLDE RILIS enabled the beta decays of In-133(gs) (I-pi = 9/2(+)) and In-133m (I-pi = 1/2(-)) to be studied…
View article: <i>β</i> decay studies of <i>n</i>-rich Cs isotopes with the ISOLDE Decay Station
<i>β</i> decay studies of <i>n</i>-rich Cs isotopes with the ISOLDE Decay Station Open
Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd-A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric s…
View article: Absolute cross sections of the<sup>86</sup>Sr(α,n)<sup>89</sup>Zr reaction at energies of astrophysical interest
Absolute cross sections of the<sup>86</sup>Sr(α,n)<sup>89</sup>Zr reaction at energies of astrophysical interest Open
Absolute cross sections for the 86Sr(α,n)89Zr reaction at energies close to the Gamow window are reported. Three thin SrF2 targets were irradiated using the 9 MV Tandem facility in IFIN-HH Bucharest that delivered α beams for the activatio…