A low background counting facility at laboratori nazionali del Gran Sasso

Arpesella, C.

doi:10.1016/s0969-8043(96)00097-8

Cited by 112 publications

(112 citation statements)

References 4 publications

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“…Most of the bulk material in the general construction were screened by this method, setting up an extensive database on bulk material radiopurity. 61,62 Inductively coupled mass spectrometry (ICPMS) is applicable to U,Th detection with a typical sensitivity of 10 -12 g/g, rising however to 10 -15 g/g for water in particular. 63 This technique has been applied to assay water samples, nylon material (after concentration by chemical ashing or digestion) and LS material (after concentration by water extraction).…”

Section: Radiopurity Of Detector Materialsmentioning

confidence: 99%

Science and technology of Borexino: a real-time detector for low energy solar neutrinos

Alimonti¹,

Arpesella²,

Back³

et al. 2002

Astroparticle Physics

336

393

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Section: Radiopurity Of Detector Materialsmentioning

confidence: 99%

Science and technology of Borexino: a real-time detector for low energy solar neutrinos

Alimonti¹,

Arpesella²,

Back³

et al. 2002

Astroparticle Physics

336

393

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“…Moreover, the electrical conductivity (EC), oxidation-reduction potential (ORP), and pH were determined with common laboratory equipment. As ICP-MS cannot be used to analyze the radioisotopes following uranium in the natural radioactive decay chain due to their extremely small concentration, some samples were filtered and analyzed by means of gamma-ray spectroscopy with high purity germanium (HPGe) detectors at the STELLA low background facility of the LNGS [18]. Using this technique the gamma active radionuclides in the uranium chain can be assessed, in particular the subchain of radium.…”

Section: Experimental Methodsmentioning

confidence: 99%

Uranium groundwater anomalies at LNGS: From the neutron flux background to the geodynamic processes

Plastino

Laubenstein

Aprili

et al. 2012

EPJ Web of Conferences

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Monitoring of chemical and physical groundwater parameters has been carried out worldwide in seismogenic areas with the aim to test possible correlations between their spatial and temporal variations and strain processes. It is shown in this paper that uranium groundwater anomalies, which were observed in cataclastic rocks crossing the underground Gran Sasso National Laboratory (LNGS), can be used as a possible strain meter in domains where continental lithosphere is subducted. Moreover, whereas at the Gran Sasso National Laboratory only the natural radioactivity in the rock, the concrete, as well as the induced part coming from interaction of cosmic ray muons with the rock or the detector materials itself were considered as possible sources for the neutron flux background, the water-rock interaction and its spatial-temporal variation induced by the hydrological pattern of the Gran Sasso aquifer must be taken into account. Water must be considered not only as moderator in concrete, but also as additional source for neutron flux modulation due to its variable concentration and its radioactivity. EPJ Web of Conferences

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“…In order to reduce the systematic error coming from the uncertainty on the angular distribution, a lead collimator was positioned inside the target chamber to collect mostly -rays emitted at 55°, where the contribution of the second Legendre polynomial vanishes. After each run, the calorimeter cap was dismounted and its activity counted off-line with a 125% HPGe detector, shielded by 15 cm of lead and 10 cm of copper on each side and placed in the low activity laboratory of LNGS [23].…”

Section: Be Reactionmentioning

confidence: 99%

Recent results on (p,γ) and (α,γ) fusion reactions at LUNA

Guglielmetti

2011

EPJ Web of Conferences

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Abstract. At temperatures typical of astrophysical environments, nuclear cross sections are extremely small and experimental measurements in a laboratory at the Earth's surface are hampered by the cosmic background. The LUNA collaboration has exploited the unique features of background reduction offered by the rock overburden above the LNGS underground laboratory in order to study very important hydrogen-burning reactions at their relevant astrophysical energies. After a general introduction on the LUNA experiment, this paper reports on the most important results for the (p,) and (,) fusion reactions measured so far and their astrophysical consequences. A quick look on the future possibilities is also given.

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A low background counting facility at laboratori nazionali del Gran Sasso

Cited by 112 publications

References 4 publications

Science and technology of Borexino: a real-time detector for low energy solar neutrinos

Science and technology of Borexino: a real-time detector for low energy solar neutrinos

Uranium groundwater anomalies at LNGS: From the neutron flux background to the geodynamic processes

Recent results on (p,γ) and (α,γ) fusion reactions at LUNA

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