1 / 12

Developments in gamma spectrometry

Alexandria University, Faculty of Engineering Nuclear Engineering Department. JINR, Frank Laboratory of Neutron Physics Department of Neutron Activation Analysis. Developments in gamma spectrometry. Ashraf KAKA. Supervisor: Dr. Marina FRONTASYEVA.

rphillips
Download Presentation

Developments in gamma spectrometry

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Alexandria University, Faculty of Engineering Nuclear Engineering Department JINR, Frank Laboratory of Neutron Physics Department of Neutron Activation Analysis Developments in gamma spectrometry Ashraf KAKA Supervisor: Dr. Marina FRONTASYEVA

  2. General considerations in gamma-ray spectrometry 1 Photoelectric absorption 2 Compton scattering 3 Pair production

  3. Photoelectric absorption

  4. Compton Scattering

  5. Pair Production 511 eV

  6. Probability of interaction of photon with matter

  7. Gamma-ray spectrometer system

  8. Preamplifier The pulses produced in the detector are very small and so the charge sensitive preamplifier, usually a field-effect transistor (FET), is mounted as close to the detector as possible

  9. Amplifier • The amplifier increases the size of the small signal from the output of the preamplifier to a pulse of amplitude up to about 10 V, dependent on the gain setting • The second purpose of the amplifier is to improve the signal to noise ratio of the given pulses

  10. Photo multiplier tube(PMTS)

  11. Conclusion The quality of gamma-spectrometers can be improved by using of a small size PMT to increase the efficiency of the detector and to minimize its size

  12. Thank you for attention!

More Related