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A gamma-ray laser, or graser, is a hypothetical device that would produce coherent gamma rays, just as an ordinary laser produces coherent rays of visible light. [1] Potential applications for gamma-ray lasers include medical imaging, spacecraft propulsion, and cancer treatment.
Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).
While many scientists remain optimistic that a breakthrough is near, an operational gamma-ray laser is yet to be realized. [84] Some of the early studies were directed toward short pulses of neutrons exciting the upper isomer state in a solid so the gamma-ray transition could benefit from the line-narrowing of Mössbauer effect.
A gravity laser, also sometimes referred to as a Gaser, Graser, or Glaser, is a hypothetical device for stimulated emission of coherent gravitational radiation or gravitons, much in the same way that a standard laser produces coherent electromagnetic radiation.
A related concept from the SDI project was the nuclear-pumped X-ray laser, an orbiting atomic bomb surrounded by laser media in the form of glass rods. When the bomb detonated, the rods would be exposed to highly-energetic gamma-ray photons, causing spontaneous and stimulated emission of X-ray photons within the rod atoms. This process would ...
The conceptual basis of short-wavelength lasers, using X-rays and gamma rays, is the same as that of their visible-light counterparts.There were discussions of such devices as early as 1960, the year the first ruby laser was demonstrated.
Pages in category "Gamma rays" The following 14 pages are in this category, out of 14 total. ... Gamma-ray astronomy; Gamma-ray laser; H. High-energy X-rays; R.
The hafnium controversy was a debate over the possibility of "triggering" rapid energy releases, via gamma-ray emission, from 178m2 Hf, a nuclear isomer of hafnium.The energy release per event is 5 orders of magnitude (100,000 times) higher than in a typical chemical reaction, but 2 orders of magnitude less than a nuclear fission reaction.