Evidence of antineutrinos from distant reactors using pure water at SNO

The SNO+ Collaboration reports the first evidence of reactor antineutrinos in a Cherenkov detector. The nearest nuclear reactors are located 240 km away in Ontario, Canada. This analysis uses events with energies lower than in any previous analysis with a large water Cherenkov detector. Two analytical methods are used to distinguish reactor antineutrinos from background events in 190 days of data and yield consistent evidence for antineutrinos with a combined significance of 3.5σ

Improved search for invisible modes of nucleon decay in water with the SNO+ detector

This paper reports results from a search for single and multi-nucleon disappearance from the $^{16}$O nucleus in water within the \snoplus{} detector using all of the available data. These so-called "invisible" decays do not directly deposit energy within the detector but are instead detected through their subsequent nuclear de-excitation and gamma-ray emission. New limits are given for the partial lifetimes: $\tau(n\rightarrow inv) > 9.0\times10^{29}$ years, $\tau(p\rightarrow inv) > 9.6\times10^{29}$ years, $\tau(nn\rightarrow inv) > 1.5\times10^{28}$ years, $\tau(np\rightarrow inv) > 6.0\times10^{28}$ years, and $\tau(pp\rightarrow inv) > 1.1\times10^{29}$ years at 90\% Bayesian credibility level (with a prior uniform in rate). All but the ($nn\rightarrow inv$) results improve on existing limits by a factor of about 3.info:eu-repo/semantics/publishedVersio

Observation of Antineutrinos from Distant Reactors using Pure Water at SNO+

The SNO+ collaboration reports the first observation of reactor antineutrinos in a Cherenkov detector. The nearest nuclear reactors are located 240 km away in Ontario, Canada. This analysis used events with energies lower than in any previous analysis with a large water Cherenkov detector. Two analytical methods were used to distinguish reactor antineutrinos from background events in 190 days of data and yielded consistent observations of antineutrinos with a combined significance of 3.5 $\sigma$.Comment: v2: add missing author, add link to supplemental materia

Development, characterisation, and deployment of the SNO+ liquid scintillator

A liquid scintillator consisting of linear alkylbenzene as the solvent and 2,5-diphenyloxazole as the fluor was developed for the SNO+ experiment. This mixture was chosen as it is compatible with acrylic and has a competitive light yield to pre-existing liquid scintillators while conferring other advantages including longer attenuation lengths, superior safety characteristics, chemical simplicity, ease of handling, and logistical availability. Its properties have been extensively characterized and are presented here. This liquid scintillator is now used in several neutrino physics experiments in addition to SNO+

Web gateway for LIS research - feasibility study Report to the Library and Information Commission and the British Library Research and Innovation Centre

SIGLEAvailable from British Library Document Supply Centre-DSC:5188.5155(56) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Best Value and better performance in libraries

Grant number LIC/RE/095Available from British Library Document Supply Centre-DSC:5188.515500F(52) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Teleworking directory

SIGLEAvailable from British Library Document Supply Centre-DSC:99/22250 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Storm activity in ancient climates 2. An analysis using climate simulations and sedimentary structures.

Severe storms generate sedimentary structures and textures that can be identified in the geologic record. A companion paper [PSUCLIM, this issue] describes the genesis and distribution of both winter storms and hurricanes and their sensitivity to climatic and geographic variables. In this paper, a total of 90 storm deposits are compared to GENESIS climate simulations in order to examine storm activity from the Permian to the Cretaceous and to evaluate the ability of the model to predict storms in ancient environments. Approximately 70% of the observed deposits are predicted by the models. The majority of the missed deposits are associated with recognizable errors. If these specific sources of error are eliminated, the model predicts over 90% of observed deposits. This degree of accuracy allows the assignment of generative processes to individual deposits; however, causative differences between hummocky cross stratification and tempestite type deposits are not distinguishable. The distribution of severe storms through Earth history varies as a function of both continental geometry and climate. Elevated atmospheric CO2 appears to homogenize the latitudinal distribution of storm deposits by expanding the area of hurricane genesis. Geography exerted the dominant control on winter storm distribution and was responsible for a shift in the concentration of winter storm deposits from the Southern Hemisphere in the Early Permian to the Northern Hemisphere in the mid-Cretaceous.Anna M. Agustsdottir, Eric J. Barron, Karen L. Bice, Lee A. Colarusso, Janette L. Cookman, Brian A. Cosgrove, Jennifer L. De Lurio, Jan F. Dutton, Brent J. Frakes, Lawrence A. Frakes, Carmen J. Moy, Thomas D. Olszewski, Richard D. Pancost, Christopher J. Poulsen, Charles M. Ruffner, Douglas G. Sheldon, and Timothy S. White