Experimental survey of the production of α -decaying heavy elements in U 238 + Th 232 reactions at 7.5–6.1 MeV/nucleon

  title={Experimental survey of the production of $\alpha$ -decaying heavy elements in U 238 + Th 232 reactions at 7.5–6.1 MeV/nucleon},
  author={Sara Wuenschel and Kris Hagel and M. Barbui and Jérome Gauthier and X. G. Cao and R. Wada and E. J. Kim and Zbigniew Majka and Roman Planeta and Zbigniew Sosin and A. Wieloch and Karolina Zelga and S. Kowalski and Katarzyna Schmidt and C. Ma and G. Zhang and Joseph B. Natowitz},
  journal={Physical Review C},
The production of alpha particle decaying heavy nuclei in reactions of 7.5-6.1 MeV/nucleon $^{238}$U +$^{232}$Th has been explored using an in-beam detection array composed of YAP scintillators and gas ionization chamber-Si telescopes. Comparisons of alpha energies and half-lives for the observed products with those of the previously known isotopes and with theoretically predicted values indicate the observation of a number of previously unreported alpha emitters. Alpha particle decay energies… Expand
13 Citations
The Synthesis of New Neutron-Rich Heavy Nuclei
All the known isotopes of the elements Fm through Og are neutron-deficient relative to -stability. In this contribution, I discuss two methods of producing more n-rich heavy nuclei, i.e., the use ofExpand
Approaching the neutron-rich heavy and superheavy nuclei by multinucleon transfer reactions with radioactive isotopes
The dynamical mechanism of multinucleon transfer (MNT) reactions has been investigated within the dinuclear system (DNS) model, in which the sequential nucleon transfer is described by solving a setExpand
Recent developments in radioactive charged-particle emissions and related phenomena
Abstract The advent and intensive use of new detector technologies as well as radioactive ion beam facilities have opened up possibilities to investigate alpha, proton and cluster decays of highlyExpand
Microscopic predictions for the production of neutron-rich nuclei in the reaction Yb176 + Yb176
Background: Production of neutron-rich nuclei is of vital importance to both understanding nuclear structure far from stability and to informing astrophysical models of the rapid neutron captureExpand
Selection of projectiles for producing trans-uranium nuclei in transfer reactions within the improved dinuclear system model
The multi-nucleon transfer process is a promising approach for producing neutron-rich heavy nuclei. Its favorable projectile-target combinations play a key role in experiments. As an importantExpand
Monte-Carlo simulation of ion distributions in a gas cell for multinucleon transfer reaction products at LENSHIAF spectrometer
Abstract The multinucleon transfer (MNT) reaction is one promising way to produce neutron-rich heavy nuclei and even super heavy nuclei and attracts more and more attentions theoretically andExpand
Production cross sections for exotic nuclei with multinucleon transfer reactions
The main progresses in the multinucleon transfer reactions at energies close to the Coulomb barrier are reviewed. After a short presentation of the experimental progress and theoretical progress, theExpand
Possibilities of producing superheavy nuclei in multinucleon transfer reactions based on radioactive targets
The multinucleon transfer (MNT) process has been proposed as a promising approach to produce neutron-rich superheavy nuclei (SHN). MNT reactions based on the radioactive targets 249Cf, 254Es, andExpand
Theoretical progress on production of isotopes in the multinucleon transfer process
As one promising approach for producing nuclei beyond the β-stability line, the multinucleon transfer (MNT) process has been extensively investigated in past decades. An overview of the theoretical...
Temperature-dependent symmetry energy of neutron-rich thermally fissile nuclei
Abdul Quddus,1 M. Bhuyan,2,3,4 Shakeb Ahmad,1 B. V. Carlson,4 and S. K. Patra5,6 1Department of Physics, Aligarh Muslim University, Aligarh 202002, India 2Department of Physics, Faculty of Science,Expand


Prospects of heavy and superheavy element production via inelastic nucleus-nucleus collisions – from 238U+238U to18O+254Es
Multi-nucleon transfer reactions, frequently termed deep-inelastic, between heavy-ion projectiles and actinide targets provide prospects to synthesize unknown isotopes of heavy actinides andExpand
Reexamining the heavy-ion reactions 238 U+ 238 U and 238 U+ 248 Cm and actinide production close to the barrier
Recent theoretical work has renewed interest in radiochemically determined isotope distributions in reactions of 238U projectiles with heavy targets that had previously been published only in parts.Expand
Nuclear systematics of the heavy elements—II Lifetimes for alpha, beta and spontaneous fission decay
Abstract The experimental half-lives for alpha, beta and spontaneous fission decay are analysed for the heavy elements (A ≥ 140). From the systematic behaviour of these data, semi-empiricalExpand
Production of unknown neutron-rich isotopes in U 238 + U 238 collisions at near-barrier energy
The production cross sections for primary and residual fragments with charge number from $Z=70$ to 120 produced in the collision of $^{238}\text{U}+\phantom{\rule{0.16em}{0ex}}^{238}\text{U}$ at 7.0Expand
Production of heavy trans-target nuclei in multinucleon transfer reactions
Problems of production and study of new neutron-enriched heavy nuclei are discussed. Low-energy multinucleon transfer reactions are shown to be quite appropriate for this purpose. Reactions withExpand
Isotope distributions in the reaction of /sup 238/U with /sup 238/U
Radiochemically determined cross sections sigma (Z, A) were used to construct charge and mass distributions for the reaction of 1785-MeV /sup 238/U ions with thick /sup 238/U targets. Fission of theExpand
Investigation of deep inelastic reactions in 238U + 238U at Coulomb barrier energies
We investigated deep inelastic reactions in 238U + 238U collisions at 6.09, 6.49, 6.91, 7.1 and 7.35×A MeV at the VAMOS spectrometer (GANIL). A large transfer of neutrons and protons was observed atExpand
Large-scale evaluation of β -decay rates of r -process nuclei with the inclusion of first-forbidden transitions
Background: $r$-process nucleosynthesis models rely, by necessity, on nuclear structure models for input. Particularly important are $\ensuremath{\beta}$-decay half-lives of neutron-rich nuclei. AtExpand
Decay properties and stability of heaviest nuclei with Z≤132 are studied within the macro-microscopical approach for nuclear ground state masses and phenomenological relations for the half-lives withExpand
The reaction238U +238U at 7.42MeV/u
One-particle-inclusive measurements have been performed for the charge, kinetic energy and angular distributions of reaction products from238U +238U at 1 766MeV (7.42MeV/u) incident energy. The deepExpand