Results are presented for a simulation carried out to test the precision with which a detector design (HERON) based on a superfluid helium target material should be able to measure the solar pp and 7Be fluxes. It is found that precisions of ±1.68% and ±2.97% for pp and 7Be fluxes, respectively, should be achievable in a 5-year data sample. The physics motivation to aim for these precisions is o...

Nuclear electron capture rate from continuum in an astrophysical plasma environment (like solar core) is calculated using a modified Debye–Hückel screening potential and the related non-Gaussian q-distribution of electron momenta. For q = 1 the well-known Debye–Hückel results are recovered. The value of q can be derived from the fluctuation of number of particles and temperature inside the Deby...

Depth profiles and cumulative deposition of four fallout radionuclides (7Be, 137Cs, 210Pb and 239,240Pu) were determined in presumably undisturbed soils in Taiwan. Inventories of these radionuclides in different areas correlate significantly with each other (except 7Be) and with mean annual rainfall, providing a necessary condition for the development of soil erosion studies in Taiwan. However,...

Mosses have been widely used as biomonitors of a variety atmospheric pollutants, including radionuclides. Here we determine the radionuclide activity concentration 210Pb, 137Cs, 7Be, and 40K in moss tissue (Hylocomium splendens) collected from 24 sites across Ireland assess influence precipitation on spatial distribution. Lead-210 was most abundant (range: 226–968 Bq kg–1), followed by 7Be <...

We analyze all available solar and related reactor neutrino experiments, as well as simulated future 7Be, p− p, and pep solar neutrino experiments. We treat all solar neutrino fluxes as free parameters subject to the condition that the total luminosity represented by the neutrinos equals the observed solar luminosity (the ‘luminosity constraint’). Existing experiments plus the luminosity constr...

We apply the microscopic three-cluster model developed by authors to study effects of cluster polarization on capture reactions 3He(?, ?)7Be, ?) 7Li, 6Li(p, ?)7Be and 6Li(n, ?)7Li. These are great importance for astrophysical applications. Thus main attention is paid cross section (or S factor) at low energies. also thoroughly correlations between factor zero energy various quantities associate...

Quantifying of sediment reworking processes provides new insights into benthic ecosystem functioning of the Thau lagoon, an important European shellfish farming area. In order to evaluate bioturbation rates of surface sediments, profiles of 7Be (half-life: 53 days) and 234Th (half-life: 24.1 days) were measured in cores collected since December 2001 to December 2006. Several sites were selected...

Measuring the 7Be solar neutrino flux is crucial towards solving the solar neutrino puzzle. The Borexino experiment, and possibly the KamLAND experiment, will be capable of studying the 7Be neutrinos in the near future. We discuss (1) how the seasonal variation of the Borexino and KamLAND data can be used to measure the 7Be solar neutrino flux in a background independent way and (2) how anomalo...

Trace gas measurements of TOPSE and TRACEP experiments and corresponding global GEOS-Chem model simulations are analyzed with the Positive Matrix Factorization (PMF) method for model evaluation purposes. Specially, we evaluate the model simulated contributions to O3 variability from stratospheric transport, intercontinental transport, and production from urban/industry and biomass burning/bioge...