Ultra-sensitive in-beam gamma-ray spectroscopy for nuclear astrophysics at LUNA

Abstract

Ultra-sensitive in-beam gamma-ray spectroscopy studies for nuclear astrophysics are performed at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator, deep underground in Italy's Gran Sasso laboratory. By virtue of a specially constructed passive shield, the laboratory gamma-ray background for E_γ< 3 MeV at LUNA has been reduced to levels comparable to those experienced in dedicated offline underground gamma-counting setups. The gamma-ray background induced by an incident alpha-beam has been studied. The data are used to evaluate the feasibility of sensitive in-beam experiments at LUNA and, by extension, at similar proposed facilities.

accepted, Eur. Phys. J. A

References in corpus (9)

• Study of the 12C+12C fusion reactions near the Gamow energy
• Activation measurement of the 3He(alpha,gamma)7Be cross section at low energy
• Astrophysical S-factor of the 3He(alpha,gamma)7Be reaction measured at low energy via prompt and delayed gamma detection
• First measurement of the 14N(p,gamma)15O cross section down to 70 keV
• CN-Cycle Solar Neutrinos and Sun's Primordial Core Metalicity
• 3He(alpha,gamma)7Be cross section at low energies
• The 3He(alpha,gamma)7Be S-factor at solar energies: the prompt gamma experiment at LUNA
• Feasibility of low energy radiative capture experiments at the LUNA underground accelerator facility
• Measurement of 25Mg(p; gamma)26Al resonance strengths via gamma spectrometry

Cited by in corpus (14)

• LUNA: Nuclear Astrophysics Deep Underground
• LUNA: Status and Prospects
• The 14N(p,gamma)15O reaction studied with a composite germanium detector
• A new study of the ${}^{22}$Ne(p,$\gamma$)${}^{23}$Na reaction deep underground: Feasibility, setup, and first observation of the 186 keV resonance
• Direct measurement of the 15N(p,gamma)16O total cross section at novae energies
• An actively vetoed Clover gamma-detector for nuclear astrophysics at LUNA
• Neutron-induced background by an alpha-beam incident on a deuterium gas target and its implications for the study of the 2H(alpha,gamma)6Li reaction at LUNA
• The study of key reactions shaping the post main-sequence evolution of massive stars in underground facilities
• Experimental determination of the ${}^3$He($\alpha$,$\gamma$)${}^7$Be reaction cross section above the ${}^7$Be proton separation threshold
• First direct measurement of the 64.5 keV resonance strength in ${}^{17}$O(p,$\gamma$)${}^{18}$F reaction
• Energy Acceptance of the St. George Recoil Separator
• A new study of ${}^{25}$Mg($\alpha$,n)${}^{28}$Si angular distributions at $E_{\alpha }$ = 3 - 5 MeV
• Progress of the Felsenkeller shallow-underground accelerator for nuclear astrophysics
• Study of the ${}^{20}$Ne($p,\gamma$)${}^{21}$Na reaction at LUNA