Difference between revisions of "Doppler Broadening"
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| − | <math>cos\theta_{ | + | <math>cos\theta_{photon1}</math>=-<math>cos\theta_{i}</math> for an excited fragment in det-1= angle between momentum of fragment <math>i</math> 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> | ||
<math>\theta_i</math> is the polar emission angle of excited fragment and <math>\beta_i</math> the fragment velocity<br> | <math>\theta_i</math> is the polar emission angle of excited fragment and <math>\beta_i</math> the fragment velocity<br> | ||
| + | |||
| + | <math>sqrt{E_i[MeV]}</math> | ||
== Photon emission off fission fragment velocity axis== | == Photon emission off fission fragment velocity axis== | ||
Revision as of 04:08, 24 June 2007
Theory of Dopler Broadening
Photon emmision along direction of fission fragment velocit
= amount of energy the gamma ray was shifted by
where is the Doppler-shifted -ray energy which was measured
=- for an excited fragment in det-1= angle between momentum of fragment 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