This allows to easily identify X-and gamma-ray contributions in densely populated spectra, such as from the Ac-225 decay chain ... performance is demonstrated using Tc-99m-and Ac-225-filled resolution ...

These atomic nuclei emit radiation or particles during the decay process ... photon signal through a detector to generate an image. Typically, radionuclides such as Technetium-99m, which emit gamma ...

Observations from high-flying aircraft revealed that thunderclouds act as natural particle accelerators, emitting energetic ...

Random means that we cannot predict when an individual unstable nucleus will decay. Alpha radiation ... Image caption, 2. It does this by emitting a high energy electromagnetic wave called a gamma ...

These rare outbursts eject a fireball of matter and radiation. In under a second ... process elements are unstable. As they decay, they release gamma rays—high-energy light that can be observed ...

The Milky Way, our home galaxy, is part of a different supercluster called Laniakea, which, at 500 million light-years wide, is dwarfed by the Hercules–Corona Borealis Great Wall. In fact, the team ...

Man has always been exposed to natural radiation arising from the earth as well as from outside the earth. The radiation we receive from outer space is called cosmic radiation or cosmic rays ...

Physicists propose that high-energy photon jets from collapsing stars may be secret factories of heavy elements like ...

Second, telescopes have detected a mysterious glow of gamma rays with an energy of 511 kilo ... it may also be able to replicate some amount of 511 keV radiation as well. This striking finding ...