Self absorption
Download
1 / 8

Self Absorption - PowerPoint PPT Presentation


  • 169 Views
  • Uploaded on

Self Absorption. Photon Attenuation. HW 1. Self-Absorption. Valid for parallel photon emission or far geometries. Self absorption. Calculation vs. Simulation Data from XCOM. http://www.nist.gov/pml/data/xcom/index.cfm. More Realistic. Parallel Photon Emission. Isotropic Photon

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Self Absorption' - thu


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Self absorption
Self Absorption

Photon Attenuation

HW 1

Self-Absorption

Valid for parallel

photon emission

or far geometries.

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Self absorption1
Self absorption

Calculation vs. Simulation

Data from XCOM

http://www.nist.gov/pml/data/xcom/index.cfm

More

Realistic

Parallel Photon

Emission

Isotropic Photon

Emission

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Self absorption2
Self Absorption

Geant4 vs. XCOM for Parallel Photon Emission

But

not

realistic

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Self absorption3
Self Absorption

XCOM vs. Geant4for Isotropic Photon Emission

in Close Geometry

Al

Isotropic Photon

Emission

Al

Fe

Fe

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Self absorption4
Self Absorption

XCOM vs. Geant4 for Isotropic Photon Emission in Close and Far Geometries

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Geometric correction factor
Geometric Correction Factor

Total Geometric Correction Factor for Self-Absorption and Extended Source

No Coincidence Summing yet …!

Point

Source

Air

Sample

Container

Soil

Extended

Source

Detector

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Geometric correction factor1
Geometric Correction Factor

GMX HPGe detector total geometric correction factor kg

for a soil sample of 4 cm height.

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


Simulated efficiency calibration
Simulated Efficiency Calibration

Efficiency Calibration of the GMX System for Environmental Samples

Special Topics in Nuclear Physics, JU, Second Semester, 2010-2011 (Saed Dababneh).


ad