We present cross sections for neutron-rich copper (Z=29) to germanium (Z=32) isotopes in nucleon-removal reactions. The experiments were carried out at the Radioactive Isotope Beam Factory of the Riken laboratory during the Seastar campaign, where an incident beam of 238U at 345 MeV/u created a range of exotic nuclei in a beryllium target. These nuclei were sent through the Bigrips separator...
Two particle transfer reactions provide realistic tools to understand reaction mechanisms due to
the enhanced matrix elements connecting systems of neighbouring nuclei differing by two units. The
resultant pairing interactions in the (A+2) nuclei, if present in a weakly bound system near the drip
lines, can develop diffused Borromean halos as the Cooper pair of the nucleons can scatter into...
Several properties of atomic nuclei are known to be sensitive to the neutron-to-proton (isospin) asymmetry. Isotopic chains that extend from the valley of beta-stability towards the drip lines have now become accessible with the advent of radioactive-ion beam facilities. In particular, the evolution of the single-particle strength as a function of isospin has been the subject of experimental...
In this work, I will present the preliminary results of the study of the resonance states in 26 S by
elastic scattering of 22 Mg(α,α) 22 Mg. Resonances in 26 S are important to determine the reaction rate of the 22 Mg(α,p) 25 Al [1] and 25 Al(p,γ) 26 Si. The study of the resonances was performed using the active target ATTPC [2] with a re-accelerated radioactive beam produced in the ReA3...
Short-Range Correlations (SRC) are two-body components of the nuclear wave function with high relative momentum and low center-of-mass momentum relative to the Fermi momentum, k$_F$. These high-momentum nucleons, which are absent in a simple Fermi gas model, are formed as temporary closed-proximity nucleon pairs with high density, several times the nuclear saturation density. Studying the...
The experimental data collected during the S515 experiment performed by R3B collaboration at GSI/FAIR represent a great opportunity to obtain nucleon knockout cross sections of exotic nuclei around 132Sn. These cross sections can be used to extract information about short-range correlations (SRCs), which emerge from pairs of nucleons having large relative momentum compared to their...
Although the importance of the fission fragment treatment in stellar nucleosynthesis r-process calculations is well established, an aspect of the phenomenological descriptions of fission that has so far remained relatively unexplored in the r-process is the dependence of the fission yields on the excitation energy or temperature of the compound nuclei [1]. Moreover, the fission yields and...
Direct reaction experiments in inverse kinematics are one of the best suited tools to probe a broad range of nuclear properties, providing great insight into the nuclear structure of exotic nuclei and allowing the measurement of reactions relevant to many astrophysical scenarios. In order to fully exploit RAON (RIB facility currently under construction in Korea), the CENS group has devoted a...
The equation of state (EoS) plays a key role in many different aspects of modern physics, being fundamental for understanding the structure of nuclear matter, the properties of neutron stars, core-collapse supernova explosions, and the synthesis of heavy elements. While the properties of proton-neutron symmetric matter are relatively well known, the study of asymmetric matter via properties of...
The region around the magic numbers $N=28$ and $Z=20$ is of great interest in nuclear structure physics. Moving away from the doubly-magic isotope $^{48}$Ca, in the neutron-rich direction there is evidence of an emergent shell gap at $N=34$ [1], and in the proton-deficient direction, the onset of shape deformation suggests a weakening of the $N=28$ magic number [2]. The $^{47}$K(d,p)$^{48}$K...
Nuclear fission has been used as a tool for the study of nuclear propierties since its discovery in 1939. A new approach was performed in the context of the R3B collaboration, at the FAIR facilities, in which knockout reactions were used to induce fission in ${}^{238}$U, which will allow to characterise the excitation energy of the process. The CALIFA calorimeter, a key part of the set-up,...
The study of nucleon transfer reactions is an important area of heavy ion physics because these reactions provide the possibilities for the synthesis of new exotic nuclei. There are various methods of production of light exotic neutron-rich nuclei (light nuclei with an unusually high number of neutrons). Multi-nucleon transfer reactions are one of the tools to access neutron-rich oxygen...
The systematics of E2 transition probabilities along the Sn isotopic chain has received much attention in both experiment and theory. One of the latest Monte Carlo shell models suggested dynamic shape changes in the Sn isotopes and their excited states, while addressing the enhancement of B(E2) values towards $^{100}$Sn. A safe-energy Coulomb excitation of $^{110}$Sn was performed with the...
We present an analysis of the 11Be+208Pb and 37Mg+208Pb breakup reactions in the projectile zero binding energy limit. The objective is to verify whether finite and converged breakup observables can be obtained for an s-wave neutron-halo system when its ground-state binding energy approaches zero. Applying the CDCC formalism, it is shown that for both projectiles, finite and converged breakup...
We systematically investigate the underlying relations among different levels of approximation for simulating electronic de-excitations, with a focus on modeling X-ray emission spectroscopy (XES). Using Fermi's golden rule and explicit modeling of the initial, core-excited state and the final, valence-hole state, we show that XES can be accurately modeled by using orbital optimization for the...
Recent measurement of coherent π0 photoproduction on Pb lead to a most accurate determination of the neutron skin, constraining nuclear matter Equation of State (EoS) at around ρ~1ρ0. A natural next step is elucidating the nuclear EoS at higher densities to tune our understanding of the most violent process in the Universe - neutron stars mergers. It was demonstrated that at densities above...
In this talk I would like to introduce to you our study on the collective inertial mass in low-energy nuclear reactions.The inertial mass coefficients with respect to translational, relative and rotational nuclear collective motions are calculated, based on the adiabatic self-consistent collective coordinate (ASCC) method. The impact of the time-odd component of the mean-field potential on the...
In 2014, an accelerator mass spectrometry measurement counted a surprisingly large number of $^{10}$Be atoms in a sample of $^{11}$Be decay products, inferring the $^{11}$Be$\rightarrow^{10}$Be decay branch to be 9(1) ppm. The presence of $^{10}$Be can be interpreted as the first evidence of the never before observed $\beta^-$-delayed proton decay. A measurement of the low-energy...
By following a few previous studies considering the reaction dynamics processes that occur between weakly-bound halo nuclei projectiles on heavy targets [1], we report here a more recent study, in which the Coulomb-nuclear interference is investigated as a function of the projectile ground-state binding energy [2]. For that, we take into account a detailed analysis done for the 8Li+12C and...
