https://www.mpg.de/10608945/terahertz-radiation-source
T. Kampfrath and his team from the Fritz Haber Institute of the Max Planck Society have developed a new source of radiation in the terahertz spectrum.
a newsourceradiationacrossentire
https://www.nationalacademies.org/read/11976/chapter/13
Read chapter 10 IMPLEMENTATION OPTIONS FOR ENCOURAGING REPLACEMENT OF RADIONUCLIDE RADIATION SOURCES WITH ALTERNATIVES: In the United States there are sev...
radiation sourcereadusereplacementabbreviated