Daniela Mercogliano
A5002796686- Nuclear physics research studies
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Atomic and Subatomic Physics Research
- Atomic and Molecular Physics
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- Algorithms and Data Compression
- X-ray Spectroscopy and Fluorescence Analysis
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Spectroscopy and Laser Applications
- Quantum, superfluid, helium dynamics
- Atmospheric Ozone and Climate
- Advanced NMR Techniques and Applications
University of Naples Federico II
2022-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023-2025
Istituto Nazionale di Fisica Nucleare
2022
In nuclear astrophysics, the accurate determination of reaction cross sections at astrophysical energies is critical for understanding stellar evolution and nucleosynthesis. This study focuses on $^{12}$C($p, \gamma$)$^{13}$N reaction, which takes part in CNO cycle significant determining $^{12}$C/$^{13}$C ratio interiors. Data from various studies, including recent LUNA measurements, reveal high discrepancies section values, underscoring need robust fitting approaches. Utilizing R-matrix...
In nuclear astrophysics, the accurate determination of reaction cross sections at astrophysical energies is critical for understanding stellar evolution and nucleosynthesis. This study focuses on $^{12}\mathrm{C}(p,\ensuremath{\gamma})^{13}\mathrm{N}$ reaction, which takes part in CNO cycle significant determining $^{12}\mathrm{C}/^{13}\mathrm{C}$ ratio interiors. Data from various studies, including recent LUNA measurements, reveal high discrepancies cross-section values, underscoring need...
The CNO cycle is one of the most important nuclear energy sources in stars. At temperatures hydrostatic H-burning (20 MK<T<80 MK) ^{17}O(p,γ)^{18}F reaction rate dominated by poorly constrained 64.5 keV resonance. Here, we report on first direct measurements its resonance strength and capture contribution at 142 keV, performed with a new high sensitivity setup LUNA. present ωγ_{(p,γ)}^{bare}=(30±6_{stat}±2_{syst}) peV about factor 2 higher than values literature, leading to...
In deep-underground experiments, intrinsic detector background can exceed the external one, limiting detection sensitivity. Intrinsic in liquid scintillator neutron detectors consists of alpha particles emitted from radioactive impurities housing (and possibly liquid). We present results long measurements 12 EJ-309 organic scintillators Gran Sasso National Laboratory Italian Institute Nuclear Physics. These are a part array for SHADES ERC project that aims to measure very low cross section...
Nuclear reactions are responsible for the chemical evolution of stars, galaxies and Universe. Unfortunately, at temperatures interest nuclear astrophysics, cross-sections thermonuclear in pico- femto-barn range thus measuring them laboratory is extremely challenging. In this framework, major steps forward were made with advent underground pioneered by Laboratory Underground Astrophysics (LUNA). The cosmic background reduction several orders magnitude obtained LUNA, however, needs to be...
In this paper, light charged particle emission in the evaporation residue channel for 190 MeV 40Ar + 27Al reaction leading to 67Ga composite nuclei at Ex = 91 and angular momentum up 46 ℏ has been re-analyzed. The main goal was study decay of on basis an extended set observables order provide a description evaporative cascades using multistep Monte Carlo approach. proton α-particle energy spectra along with their distributions ratios differential multiplicities have considered. measured were...
The nuclear properties of $^{36}\mathrm{Ar}$ composite $\ensuremath{\alpha}$-like nuclei produced at 46.72 MeV excitation energy via the $^{24}\mathrm{Mg}+^{12}\mathrm{C}$ reaction were investigated. In past, this energy, resonant structures with peak-to-valley variation 50--100 mb have been observed for system and associated fusion cross sections. To reveal nature phenomenon channel observable was Exclusive measurements $\ensuremath{\alpha}$ particles evaporation residues carried out...
The stellar evolution and chemical make-up of the Universe are determined by nuclear reactions occurring in a wide variety sites. Precise determinations cross sections these crucial for calculation reaction rates development models. Laboratory Underground Nuclear Astrophysics (LUNA) collaboration has been at forefront direct measurement low energies astrophysical interest last 35 years. many significant results achieved LUNA have made possible due to background conditions uniquely available...
The 22Ne(α,n)25Mg reaction is of major importance in nuclear astrophysics. It the main neutron source for weak s-process and as such responsible nucleosynthesis 60 < A 90 elements. In addition, it provides a strong burst during later, hottest phases s-process, which modifies final products, especially at so-called branch points, can be used to provide insight into stellar interior that time. rate needs known below ca. 900 keV, due low cross-section these energies, direct measurement has...
22Ne(α, γ)26Mg is pivotal in the understanding of several open astrophysical questions, as nucleosynthesis beyond Fe through s-process, but its stellar reaction rate still subject to large uncertainties. These mainly arise from extremely low Gamow energy region, whose measurement hampered by unavoidable presence cosmic ray background noise. A possibility overcome this issue perform a quasi background-free environment, such that offered underground Bellotti Ion Beam Facility at LNGS. This key...