23 research outputs found
Time-dependent Hartree-Fock theory of charge exchange: Application to He2+ + He
An application of the time-dependent Hartree-Fock (TDHF) theory of charge transfer in atomic collisions is presented. Probabilities for elastic and double symmetric charge exchange are calculated for a fixed laboratory scattering angle and for collision energies from 10 to 70 keV. The TDHF equations are solved using finite difference techniques and propagated in time using the Peaceman-Rachford alternating-direction implicit method. Plots of time-evolved charge densities are presented also
Mean-Field Approximation to p + He Scattering
The scattering of protons by helium atoms is studied in a mean-field approximation to the many-body S matrix. The one-body equations governing the electron dynamics for elastic scattering are solved iteratively beginning with the interaction-picture time-dependent Hartree-Fock (TDHF) solution. At a representative proton laboratory energy of 20 keV, the converged S-matrix elements are within 10% of the TDHF value. Inclusive single-charge transfer probabilities calculated in the interaction-picture TDHF approximation agree reasonably well with the experimental data
Physics Potential of the ICAL detector at the India-based Neutrino Observatory (INO)
The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the
India-based Neutrino Observatory (INO) is designed to study the atmospheric
neutrinos and antineutrinos separately over a wide range of energies and path
lengths. The primary focus of this experiment is to explore the Earth matter
effects by observing the energy and zenith angle dependence of the atmospheric
neutrinos in the multi-GeV range. This study will be crucial to address some of
the outstanding issues in neutrino oscillation physics, including the
fundamental issue of neutrino mass hierarchy. In this document, we present the
physics potential of the detector as obtained from realistic detector
simulations. We describe the simulation framework, the neutrino interactions in
the detector, and the expected response of the detector to particles traversing
it. The ICAL detector can determine the energy and direction of the muons to a
high precision, and in addition, its sensitivity to multi-GeV hadrons increases
its physics reach substantially. Its charge identification capability, and
hence its ability to distinguish neutrinos from antineutrinos, makes it an
efficient detector for determining the neutrino mass hierarchy. In this report,
we outline the analyses carried out for the determination of neutrino mass
hierarchy and precision measurements of atmospheric neutrino mixing parameters
at ICAL, and give the expected physics reach of the detector with 10 years of
runtime. We also explore the potential of ICAL for probing new physics
scenarios like CPT violation and the presence of magnetic monopoles.Comment: 139 pages, Physics White Paper of the ICAL (INO) Collaboration,
Contents identical with the version published in Pramana - J. Physic
Effect of alliums on total lipid in plasma and tissues of Japanese quails (<i>Coturnix coturnix japonica</i>)<i> </i>with respect to age and sex
187-191Dietary onion and garlic caused an increase
in the level of liver and plasma total lipids in Coturnix oturnix japonica. This
increase could be due to the effect of an increased feed intake, bile
production, digestion and absorption that in turn caused an increased
utilisation of dietary fat, increased transfer of dietary lipids to the liver
and/or due to increased lipogenesis as such. However, there was no
increase in the muscle lipid content. This effect in the muscle could be due to
inhibitory effect of onion or garlic on lipoprotein lipase activity. Further,
the changes in the tissue total lipid level in the control group due to change
in age and sex were also observed
<span style="font-size:14.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-IN;mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">Effect of onion (<i>Allium cepa</i> Linn.) and garlic (<i>Allium sativum</i> Linn.) on plasma triglyceride content in Japanese quail (<i>Coturnix coturnix japonicum</i>)</span>
88-90<span style="font-size:14.0pt;line-height:
115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:hi"="" lang="EN-IN">Dietary
onion and garlic caused an increase in the level of plasma triglyceride which
could be due to insulin like activity of dietary alliums and other factors that
promote lipogenesisi in growing stages. Changes in the plasma triglyceride
level in the control group due to change in age and sex were also noted. The triglyceride
level was more in female birds when compared to males of similar age group. The
plasma trigelyecride level increased with age in both sex except for the level being
similar in the 6 and 9-week old females and 3 and 6-week old male birds. The
results suggest that the effects of alliums in growing and adult stages may be
different which needs further study.</span