1. The production mechanism of annihilation radiation introduces Doppler broadening . 2. Molecular-scale Doppler broadening will also contribute. 3. Doppler broadening has also been used as a design consideration in high temperature nuclear reactors.4. Doppler broadening therefore creates a negative feedback because as fuel temperature increases, reactor power decreases.5. Fast reactor control cannot depend solely on Doppler broadening or on negative void coefficient from a moderator. 6. This is called doppler broadening . talk ) 01 : 29, 3 May 2010 ( UTC) 7. Doppler broadening can also be used to determine the velocity distribution of a gas given its absorption spectrum.8. For example, a combination of the thermal Doppler broadening and the impact pressure broadening yields a Voigt profile. 9. In electromagnetism, spatial dispersion plays a role in a few material effects such as optical activity and doppler broadening . 10. If the rate of fission increases, temperature will increase and Doppler broadening will occur, decreasing the rate of fission.