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$?$ Energy Loss Analysis In ${15}^p$: Application To Nuclear Batteries
Date : 12/11/2012
Author Information
Uploaded by : Reza
Uploaded on : 12/11/2012
Subject : Physics
Using radioactive nuclei for electricity generation in Microelectromechanical
Systems (MEMS) is important research as needs for longer life batteries
increase. There are many applications developed in recent years, however there
are limitations still to overcome before a final product can be produced. One
of the important issue is the low power output. This research addresses this
issue with a new method in fabrication for powering MEMS sensors. We have
proposed to fabricate $^{63}Ni$ nano-particle $\beta^-$source in a glassy
phosphorous type sphere which creates scintillation and phosphorescent photons.
The micro-spheres will be doped in our semiconductor. Since $^{63}^Ni$ is a
pure $\beta^-$ emitter, in this report the energy loss $dE/dx$ of $\beta^-$ in
our scintillation material (phosphorus $^{15}P$) is modelled using C++ coding
with GEANT4 and furthermore the particle distributions in two different source
geometries (circular and square structure) is studied using Finite Element
Analysis (FEA). We have shown the ${63}Ni$ $\beta$ energy spectrum absorption
in ${15}^P$, where upto energy range 28keV had nearly 100$\%$ efficiency. The
optimum thickness therefore was 800$\mu m$.
This resource was uploaded by: Reza