| Autor: |
R A Pope, D R Chick, W W Evans, D A Hancock, S E Hunt |
| Rok vydání: |
1956 |
| Předmět: |
|
| Zdroj: |
Proceedings of the Physical Society. Section A. 69:624-627 |
| ISSN: |
0370-1298 |
| DOI: |
10.1088/0370-1298/69/8/307 |
| Popis: |
12C and 24Mg targets were irradiated by protons of energy 456.8 keV and 225.5 keV corresponding to the formation of excited levels in 13N and 25Al of energy 2.37 and 2.50 MeV respectively. The gamma-ray spectra were investigated using a 20 mm cube sodium iodide crystal and photomultiplier feeding into a Hutchinson-Scarrott type pulse height analyser. A single gamma ray was observed from the 2.37 MeV state in 13N. Peaks observed from 25Al could best be explained in terms of excited levels at 0.46, 1.54 and 2.5 MeV. A search was made for γ-radiation accompanying the positron decay of 25Al to 25Mg. The only peak observed was one at 0.51 MeV corresponding to annihilation radiation. It therefore seems probable that a simple positron transition between the 25Al and 25Mg ground state takes place. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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