Difference between revisions of "Doppler Broadening"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
=Theory of Dopler Broadening= | =Theory of Dopler Broadening= | ||
== Photon emmision along direction of fission fragment velocit== | == Photon emmision along direction of fission fragment velocit== | ||
| − | <math>E_{shift} = E_{photon} \frac{1-\beta \cos(\theta_{photon})}{\sqrt{1-\beta_i^2}}</math> | + | <math>E_{shift} = E_{photon} \frac{1-\beta \cos(\theta_{photon}^i)}{\sqrt{1-\beta_i^2}} = amount of energy the gamma ray was shifted by</math> |
| − | where <math>E_{photon}</math> is the | + | where <math>E_{photon}</math> is the Doppler-shifted <math>\gamma</math>-ray energy which was measured<br> |
| − | <math>cos\theta_{photon1}</math>=-<math>cos\theta_{ | + | |
| + | <math>cos\theta_{photon1}^i</math>=-<math>cos\theta_{i}</math> for an excited fragment in det-1= angle between momentum of fragment i and the emitted photon<br> | ||
<math>cos\theta_{photon2}</math>=-<math>cos\theta_{2}</math> for an excited fragment in det-2<br> | <math>cos\theta_{photon2}</math>=-<math>cos\theta_{2}</math> for an excited fragment in det-2<br> | ||
Revision as of 02:37, 24 June 2007
Theory of Dopler Broadening
Photon emmision along direction of fission fragment velocit
where is the Doppler-shifted -ray energy which was measured
=- for an excited fragment in det-1= angle between momentum of fragment i and the emitted photon
=- for an excited fragment in det-2
is the polar emission angle of excited fragment and the fragment velocity
Photon emission off fission fragment velocity axis
Cf-252 Fission
Photon Spectra from Cf-252
Measurements in the Beam test lab with HpGe and BC408
June 15,2007 Cf-252 measurements with HpGe & neutron sensitive scintillators in coincidence
June 19,2007 Cf-252 measurements with HpGe & neutron sensitive scintillators in coincidence
June 19,2007 Cf-252 measurements of gamma-spectrum using HpGe ungated