Speaker
Dr
sebastiana puglia
(LNS-INFN)
Description
Plasma state is characterized by a complexity that vastly exceeds that exhibited in the solid, liquid, and gaseous states, Correspondingly, the physical properties of nuclear matter (structure, life times, reaction mechanisms etc.) could be drastically changed inside the plasma.
These studies represent one of the most far ranging, difficult and challenging research areas today, implications could cover different fields of interest for physics. In the astrophysics context one of the most crucial aspects concerns the role of electron screening.
Direct and indirect measurements of the relevant cross sections have been performed over the years. The electron screening effect is significantly affected by the target conditions and composition, it is of particular importance for the measurement of cross-sections at extremely low energetic domains including plasma effects, i.e. in an environment that under some circumstances and assumptions can be considered as “stellar-like” (for example, for the study of the role played by free/bounded electrons on the Coulombian screening can be done in dense and warm plasmas). Electron screening prevents a direct measurement of the bare nucleus cross section at the energies of astrophysical interest. In the last decade, the bare cross section has been successfully measured in certain cases by using several indirect methods .
In order to study the electronic screening problem in a wide variety of cases and configurations with different purposes, we are proposing the construction of a general experimental setup, where it will be possible In particular to study the screening effects on low energy fusion reactions and on weakly bound nuclear states (Hoyle, Efimov etc.).
To perform this kids of experiments, we aim to take advantage from the excellent and unique performance of the ELI-NP facility and realize an experimental setup where two laser beams generate two colliding plasmas. In particular the main laser pulse impinging on B, C or Li thin foil generates a primary plasma which impacts on a second plasma slab produced through the interaction of a secondary laser pulse on a He or D2 gas jet target . In particular the main laser pulse imping on B, C or Li thin foil generates a primary plasma which impacts on a second plasma slab produced through the interaction of a secondary laser pulse on a He or D2 gas jet target . The the detectors configuration combine the high granularity SiC charged particles detectors (in vacuum) and a new generation of neutrons time-of-flight detectors (in air). Among this detectors very interesting is the development of Silicon carbide (SiC) is one of the compound semiconductor which has been considered as a potential alternative to Silicon for the realization of charge particles detectors and dosimeters in high energy physics. The chemical and physical material properties are promising for high temperature and high radiation operation conditions. SiC diodes are predicted to be radiation harder than Si due to the high displacement threshold and potentially used as radiation detectors in high radiation condition.
Primary author
Dr
sebastiana puglia
(LNS-INFN)
Co-authors
Mrs
Annamaria Muoio
(LNS-INFN)
Dr
Carmen Altana
(LNS-INFN)
Dr
David Mascali
(LNS-INFN)
Prof.
Fabrizio Odorici
(NFN- Sez. di Bologna, Dip. di Fisica e Astronomia, Univ. degli Studi di Bologna)
Prof.
Gaetano Lanzalone
(LNS-INIFN, Unikore)
Dr
Luciana malferrari
(INFN- Sez. di Bologna)
Dr
Marco Frassetto
(INFN- Sez. di Bologna,Dip. di Fisica e Astronomia, Univ. degli Studi di Bologna,)
Dr
Salvo tudisco
(Lns_infn)
