| Field | Value |
|---|---|
| Experiment Number | e838_21 |
| Title | Shedding new light on the structure of 56Ni using (n,3n) reaction at NFS |
| Spokeperson(s) | |
| Data Manager(s) | |
| GANIL Scientific Coordinator | |
| Collection Dates (dd-mm-yy) |
Start: 26-09-2023 End: 06-10-2023 |
| End of Embargo | 06-10-2027 |
| DOI | |
| DOI State | findable |
| Publication Year | 2023 |
| Publisher | GANIL, Large Heavy Ion National Accelerator, Caen, France |
| Data Curator | |
| Hosting Institution | |
| Size | 45.06 TB |
We re-investigate the nuclear structure of the doubly magic nuclei 56Ni using the (n,3n) reaction from 58Ni. 56Ni is of particular interest in nuclear structure. It is a doubly magic nuclei with a highly deformed configuration coexisting at low excitation energy and therefore a particularly relevant laboratory while studying the competition between single particle and collective excitations in nuclear matter. From the nuclear mechanism point of view, the question of the nature of the excited states populated in such reaction, for a doubly magic nuclei, is open and could be relevant for code as Talys. The experiment was performed with the neutron beam from NFS using the H2 beam at 20 MeV/u on a thick Be converter. The reaction products are identified and studied from their prompt gamma ray decay using the EXOGAM array located 8.6 meters from the neutron convertor. 12 EXOGAM clovers are used with partial AntiCompton Shield and full numexo2 electronic. The numexo2 for Exogam uses the newly implemented front end validation using the RF signal from the linac. Period of 1.3us deuteron beam at 8-10uAmps are used. The target, at air, is 1 mm thick pure natNi.
| Setup | EXOGAM (12 Clovers) |
|---|
| Ion(s) | Charge state | Energy | Energy unit | Av. intensity | Intensity unit | Purity (%) | Accelerator | Production |
|---|---|---|---|---|---|---|---|---|
| 1n | 0+ | 25-40 | MeV/u | 1.e+8 | c/cm2/s | 100 | NFS | D1+ |
| Material | Thickness | Thickness unit | Sample phase | Type |
|---|---|---|---|---|
| natNi | 1000 | μm | Solid | Isotope |
| natPb | 1000 | μm | Solid | Isotope |
| Name | Projectile | Target |
|---|---|---|
| 1n (25-40 MeV/u, q=0+, I=1.e+8 c/cm2/s) + natNi (1000 μm) | 1n(0+) @ 25-40 MeV/u | natNi (1000 μm) |
| 1n (25-40 MeV/u, q=0+, I=1.e+8 c/cm2/s) + natPb (1000 μm) | 1n(0+) @ 25-40 MeV/u | natPb (1000 μm) |
e838_21 Collaboration, e838_21 GANIL dataset (2023). doi:https://doi.org/10.26143/ganil-2023-e838_21.