0000000000206137
AUTHOR
P. Vassallo
Fabrication of Bismuth Absorber Arrays for NTD-Ge Hard X-ray Microcalorimeters
The high-spectral-resolution detection of hard X-rays (E > 20 keV) is a challenging and nearly unexplored area in space astrophysics. Traditionally hard X-ray detectors present moderate spectral resolutions, although few tens of eV one could open new frontiers in the study of nuclear processes and high-temperature plasma dynamics in energetic processes. This can be achieved by using cryogenic microcalorimeters. Within a research activity aimed at developing arrays of neutron transmutation-doped germanium (NTD-Ge) microcalorimeters for the high-spectral-resolution detection (about 50 eV@60 keV) of hard X-rays (20 keV < E<100 keV), we developed an electroplating process to fabricate …
La migrazione studentesca dalla Laurea Triennale alla Laurea Magistrale
In the last years, the Italian universities have experienced significant changes that involve the students and the universities' governance. Students' enrolment has decreased significantly especially after the economic crisis of 2008, while the students' migration from the South to the Central and Northern regions of the country has increased. This phenomenon has created further inequalities within the country and a cultural and socio-economic loss for the South. Important changes have pushed the universities also compete to attract students. Therefore, among the others, student migration is an issue that needs full consideration. In this paper, the attention is devoted to the First Level g…