23 research outputs found
A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics
The nature of dark matter and properties of neutrinos are among the mostpressing issues in contemporary particle physics. The dual-phase xenontime-projection chamber is the leading technology to cover the availableparameter space for Weakly Interacting Massive Particles (WIMPs), whilefeaturing extensive sensitivity to many alternative dark matter candidates.These detectors can also study neutrinos through neutrinoless double-beta decayand through a variety of astrophysical sources. A next-generation xenon-baseddetector will therefore be a true multi-purpose observatory to significantlyadvance particle physics, nuclear physics, astrophysics, solar physics, andcosmology. This review article presents the science cases for such a detector.<br
A next-generation liquid xenon observatory for dark matter and neutrino physics
The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for weakly interacting massive particles, while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neutrinos through neutrinoless double-beta decay and through a variety of astrophysical sources. A next-generation xenon-based detector will therefore be a true multi-purpose observatory to significantly advance particle physics, nuclear physics, astrophysics, solar physics, and cosmology. This review article presents the science cases for such a detector
A uniform enzymatic method for dissociation of myocytes from hearts and stomachs of vertebrates
Diagenetic paths in the margin of a Triassic Basin: NW zone of the Iberian Chain, Spain
Buntsandstein deposits generated in a slowly
subsiding basin on the western margin of the Iberian
Chain are represented by a stratigraphic succession of
fluvial deposits less than 100 m thick (conglomerates,
sandstones, and shales). Diagenetic processes in sandstones
can be grouped as eodiagenetic, mesodiagenetic,
and telodiagenetic. Eodiagenesis can be associated
with Muschelkalk, Keuper, and probably early Jurassic
times. Mesodiagenesis is probably related to
Jurassic times. Diagenetic chemical reactions suggest a
maximum burial less than 1.5 km and low temperatures
(<120ºC). Patterns of porosity reduction by
compaction and cementation suggest four diagenetic
stages: (1) Loss of primary porosity by early
mechanical compaction; (2) early cementation (Kfeldspar
and dolomite); (3) dissolution of cements; and
(4) framework collapse by re-compaction. These stages
are manifested by the presence of two types of sandstone.
Type I sandstones present high intergranular
volume (mean, 30%). Type II sandstones are characterized
by high compactional porosity loss and exhibit
low values of intergranular volume (mean, 16.9%).
Type II sandstones are associated with the dissolution
of cement and later re-compaction of type I sandstones.
An intermediate telodiagenetic phase is deduced
and related to the sharp unconformity between
Lower Cretaceous sediments and the underlying sediments.
This suggests that a mechanically unstable
framework collapsed during the Cretaceous, generating
type II sandstones. The analyzed diagenetic paths have
a wide applicability on similar marginal areas of rift
basins