3 rd Annual INPP Meeting 17/6/2013 M. Axiotis Institute of Nuclear & Particle Physics NCSR...
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3 rd Annual INPP Meeting 17/6/2013 . Axiotis nstitute of Nuclear & Particle Physics CSR “Demokritos” New Detector at the Tandem Laboratory of INPP for astrophysics studies Axiotis Michail
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Transcript of 3 rd Annual INPP Meeting 17/6/2013 M. Axiotis Institute of Nuclear & Particle Physics NCSR...
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
New Detector at the Tandem Laboratory of INPP for astrophysics studies
Axiotis Michail
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
Outline
• Heavy elements nucleosynthesis• p-nuclei abundances• Measurement techniques• 4π γ summing method• Experimental results• Our new detector
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
s-process100 yr
108 n/cm3
(n,γ)β-
p p
p
p
N
Z
s-nuclei
r-nuclei
s/r-nuclei
unstable
r-process
1 se
c
102
0 n/cm3
Heavy elements nucleosynthesis
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
C. Iliadis, Nuclear Physics of Stars (2008)
p-nuclei abundances
Differences between observed and calculated by Hauser-Fesbach abundances of p-nuclei in the solar system
Need to measure cross-sections to improve the “ingredients” of HF calculations
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
γ angular distribution measurements
4π γ-summing method
Measurement techniques
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
Spyrou et al. Phys. Rev. C 76,015802 (2007)
pos. apos. b pos. c
MR 48.2
4π γ summing method
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
DTL-Bochum: 12 inch x12 inch NaI crystal
Demokritos-Bochum
Demokritos-Bochum
Demokritos-Bochum
Experimental results
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
14 inch x 14 inch NaI crystal segmented in two – Up/Down
Our new detector
3rd Annual INPP Meeting17/6/2013
M. AxiotisInstitute of Nuclear & Particle PhysicsNCSR “Demokritos”
Thank you for your attention
