Gamma ray origin

Gamma Rays. Electromagnetic radiation similar to X-rays but of shorter wave lengths. Gamma rays originate in the nucleus of an atom, whereas X-rays originate in the extra-... 

Gamma and x-rays are both electromagnetic radiation but differ in their origin. As stated earlier, gamma rays originate in the nucleus of an atom, while x-rays... 

In stacked reservoirs, such as those found in deltaic series, it is common to find that some zones are not drained effectively. Through-casing logs such as thermal neutron and gamma ray spectroscopy devices can be run to investigate whether any layers with original oil saturations remain. Such zones can be perforated to increase oil production at the expense of wetter wells. 

Gamma ray The shortest wavelength and highest energy type of all electromagnetic radiation. It originates in the nucleus of radioactive isotopes along with alpha particle, beta particle, or neutron emissions. 

Gamma rays (y rays), which are high-energy, short wavelength, electromagnetic radiation particles that originate from within the nucleus... 

Gamma Ray, Penetrating—Short wavelength electromagnetic radiation of nuclear origin. 

Some radioisotopes decay emitting only gamma rays, but many do so by the concurrent emission of beta and gamma radiation. The rate at which radiation is emitted from the nuclei of different radioisotopes varies considerably. Each radioisotope has a unique form of decay that is characterized by its half-life (tV2), the time it takes for the radioactivity of the radioisotope to decrease by one-half of its original value (see Textbox 14). 

Proportional counters are extremely sensitive, and the voltages are large enough so that all of the electrons are collected within a few tenths of a microsecond. Each pulse corresponds to one gamma ray or neutron interaction. The amount of charge in each pulse is proportional to the number of original electrons produced. The proportionality factor in this case is the gas amplification factor. The number of electrons produced is proportional to the energy of the incident particle. 

Like some other spectacular discoveries such as the cosmic microwave background, gamma-ray bursts (GRBs) were discovered by accident. Meant to monitor the outer space treaty , the American VELA satellites detected in July 1967 an intense flash of gamma-rays of unknown origin. It took until 1973 before the first detected GRBs were published for the scientific community (Klebesadel et al. 1973). 

---