Decomposition of scattering phase shifts and reaction cross sections using the complex scaling method

The theory given by Rudge (1970) is reformulated and a set of coupled differential equations solved to yield elastic scattering phase shifts and XS partial inelastic cross-sections. The convergence is studied as the size of the basis set is increased and results compared with other theoretical data. It is concluded that the method is a successful one though there remain problems which require further study.

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Formation of α clusters in dilute neutron-rich matter

Science ◽

10.1126/science.abe4688 ◽

2021 ◽

Vol 371 (6526) ◽

pp. 260-264 ◽

Cited By ~ 1

Author(s):

Junki Tanaka ◽

Zaihong Yang ◽

Stefan Typel ◽

Satoshi Adachi ◽

Shiwei Bai ◽

...

Keyword(s):

Cross Sections ◽

Cluster Formation ◽

Reaction Cross ◽

Skin Thickness ◽

Neutron Skin ◽

Heavy Nuclei ◽

Α Decay ◽

Neutron Skin Thickness ◽

Reaction Cross Sections ◽

Α Particles

The surface of neutron-rich heavy nuclei, with a neutron skin created by excess neutrons, provides an important terrestrial model system to study dilute neutron-rich matter. By using quasi-free α cluster–knockout reactions, we obtained direct experimental evidence for the formation of α clusters at the surface of neutron-rich tin isotopes. The observed monotonous decrease of the reaction cross sections with increasing mass number, in excellent agreement with the theoretical prediction, implies a tight interplay between α-cluster formation and the neutron skin. This result, in turn, calls for a revision of the correlation between the neutron-skin thickness and the density dependence of the symmetry energy, which is essential for understanding neutron stars. Our result also provides a natural explanation for the origin of α particles in α decay.

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Evaluation of nuclear reaction cross sections data for the production of 65Zn via proton and deuteron induced reactions on natCu

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/s10967-021-07941-3 ◽

2021 ◽

Author(s):

W. Ali ◽

M. Zeeshan ◽

M. Hussain ◽

H. Zaneb

Keyword(s):

Nuclear Reaction ◽

Cross Sections ◽

Reaction Cross ◽

Reaction Cross Sections

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7Be and 8B reaction dynamics at Coulomb barrier energies

EPJ Web of Conferences ◽

10.1051/epjconf/201818402015 ◽

2018 ◽

Vol 184 ◽

pp. 02015

Author(s):

E. Strano ◽

M. Mazzocco ◽

A. Boiano ◽

C. Boiano ◽

M. La Commara ◽

...

Keyword(s):

Cross Sections ◽

Coulomb Barrier ◽

Reaction Cross Section ◽

Optical Model ◽

Reaction Dynamics ◽

Reaction Cross ◽

Total Reaction Cross Section ◽

Weakly Bound ◽

Total Reaction ◽

Reaction Cross Sections

We investigated the reaction dynamics induced by the 7Be,8B+208Pb collisions at energies around the Coulomb barrier. Charged particles originated by both the col- lisions were detected by means of 6 ΔE-Eres telescopes of a newly developed detector array. Experimental data were analysed within the framework of the Optical Model and the total reaction cross-sections were compared together and with the 6,7Li+208Pb colli-sion data. According to the preliminary results, 7Be nucleus reactivity is rather similar to the 7Li one whereas the 8B+208Pb total reaction cross section appears to be much larger than those measured for reactions induced by the other weakly-bound projectiles on the same target.

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