Nuclear temperatures from the evaporation fragment spectra and observed anomalies
Abstrak
The extreme back-angle evaporation spectra of α, Li, Be. B and C from different compound nuclei near A≈100 (Ex = 76-210MeV) have been studied and compared with the predictions of standard statistical model codes such as CASCADE and GEMINI. The temperatures of the ensembles of residual nuclei were extracted by fitting the back-angle spectra of the fragments emitted from 16O+89Y[E(16O)lab = 96MeV)], 16O+93Nb[E(16O)lab = 116MeV] and 3He+Ag[(E(3He)lab = 90and198MeV] reactions with the statistical evaporation formula given by Moretto [Nucl. Phys. A 247, 211 (1975] and similar analysis were also done for the corresponding calculated statistical spectra obtained from CASCADE and GEMINI codes. It was found that the shapes of the α-spectra agree well with the predictions of the Statistical Model. However, the spectra of Li, Be, B and C show significantly gentler slopes implying higher temperatures of the residual nuclei, even though the spectra satisfy all other empirical criteria of statistical emissions. The obs...
Penulis (7)
A. Ray
A. De
A. Chatterjee
S. Kailas
S. Banerjee
K. Banerjee
Suman Saha
Akses Cepat
- Tahun Terbit
- 2013
- Bahasa
- en
- Total Sitasi
- 1×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1103/PhysRevC.87.064604
- Akses
- Open Access ✓