2011-03-06, 11:26 AM
I'm studying radiochemistry here and I have a test this week about it.
I'm having a bit of trouble in this question here (translated from French by me):
"A nuclei of mass A=100 desexcitates (goes to the fundamental state) by emitting a gamma ray of 100keV. By writting the laws of conservation of energy and impulsion, show that the recoil energy Er of the nuclei is negligable and of ~0,05eV."
I know that E² = m²c²² + p²c² but I don't really know how to get the recoil energy from this.
I'm having a bit of trouble in this question here (translated from French by me):
"A nuclei of mass A=100 desexcitates (goes to the fundamental state) by emitting a gamma ray of 100keV. By writting the laws of conservation of energy and impulsion, show that the recoil energy Er of the nuclei is negligable and of ~0,05eV."
I know that E² = m²c²² + p²c² but I don't really know how to get the recoil energy from this.