Loading...
Please wait, while we are loading the content...
Similar Documents
Heavy-ion reaction studies of nuclei far from stability
| Content Provider | Semantic Scholar |
|---|---|
| Author | Orr, Nigel |
| Copyright Year | 1989 |
| Abstract | Heavy-ion multi-nucleon transfer reactions have been used to investigate a number of nuclei far from stability in the mass range A= 20 to 39. Measurements of the masses and excited states have been made for the nuclei 20N, 22.23p, 35,36,37p and 39Sc. The 39Sc mass determination is the first reported measurement and indicates that the nucleus is unbound to ground state proton emission by 580±30 keV. The first information on the level schemes of 23p, 37p and 39Sc has also been forthcoming, whiie a substantial amount of new data has been obtained for the other nuclei investigated. The probable structure of many of the new and previously reported levels observed in the present work are. deduced through comparison with shell model and DWBA calculations and by analogy with similar reactions. Where comparison is possible, the results presented here are in general in good agreement with those obtained by earlier studies. The mass evaluations for 20N and 37p are, however, notable exceptions. There is evidence that 37p may be -0.7 MeV more bound than previously accepted, although further work will be required to confirm this. In contrast, 20N appears to be -1 MeV less bound than previous determinations suggest. A possible explanation for this discrepancy is advanced. A number of techniques have been developed in the course of the work described here to aid in the detection of very low yield reaction products. These comprise a system to measure the time-of-flight of ions around a magnetic spectrograph, a normal incidence focal plane detector and a system for the production of very pure isotopic targets via ion implantation. Descriptions of these systems and associated techniques are presented. |
| File Format | PDF HTM / HTML |
| DOI | 10.25911/5d72402b5a0d8 |
| Alternate Webpage(s) | https://openresearch-repository.anu.edu.au/bitstream/1885/12477/1/Orr%20N%20A%20Thesis%201989.pdf |
| Alternate Webpage(s) | https://doi.org/10.25911/5d72402b5a0d8 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
