89 research outputs found
Resonance State Wave Functions of Be using Supersymmetric Quantum Mechanics
The theoretical procedure of supersymmetric quantum mechanics is adopted to
generate the resonance state wave functions of the unbound nucleus Be.
In this framework, we used a density dependent M3Y microscopic potential and
arrived at the energy and width of the 1.8 MeV (5/2) resonance state. We
did not find any other nearby resonances for Be. It becomes apparent
that the present framework is a powerful tool to theoretically complement the
increasingly important accelerator based experiments with unbound nuclei.Comment: 5 pages, 4 figures, Phys. Lett. B (2017
Calibration of a solid state nuclear track detector (SSNTD) with high detection threshold to search for rare events in cosmic rays
We have investigated a commercially available polymer for its suitability as
a solid state nuclear track detector (SSNTD). We identified that polymer to be
polyethylene terephthalate (PET) and found that it has a higher detection
threshold compared to many other widely used SSNTDs which makes this detector
particularly suitable for rare event search in cosmic rays as it eliminates the
dominant low Z background. Systematic studies were carried out to determine its
charge response which is essential before any new material can be used as an
SSNTD. In this paper we describe the charge response of PET to 129Xe, 78Kr and
49Ti ions from the REX-ISOLDE facility at CERN, present the calibration curve
for PET and characterize it as a nuclear track detector
Heavy Meson Production in NN Collisions with Polarized Beam and Target -- A new facility for COSY
The study of near--threshold meson production in pp and pd collisions
involving polarized beams and polarized targets offers the rare opportunity to
gain insight into short--range features of the nucleon--nucleon interaction.
The Cooler Synchrotron COSY at FZ--J\"ulich is a unique environment to perform
such studies. Measurements of polarization observables require a cylindrically
symmetrical detector, capable to measure the momenta and the directions of
outgoing charged hadrons. The wide energy range of COSY leads to momenta of
outgoing protons to be detected in a single meson production reaction between
300 and 2500 MeV/c. Scattering angles of protons to be covered extend to about
in the laboratory system. An azimuthal angular coverage of the
device around 98% seems technically achievable. The required magnetic
spectrometer could consist of a superconducting toroid, providing fields around
3 T.Comment: 6 pages, 1 figure, submitted to Czechoslovak Journal of Physic
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