emission of gamma rays

Emission of a and b -rays bring some changes in the nucleus of the atom and the new element formed as a result of these charges is called daughter elemen..

In a evacuated glass chamber a filament and a metallic target are fixed. The filament is made to emit electrons due to thermionic emission by heating it electrically. The target kept in front of the filament is given a higher potential using a d.c power supply. So the electrons are attrac..

PET is a sophisticated version of radio isotope scanning. The principle behind PET scanning is as follows. Short - lived radio isotopes such as 1 1 C, 1 3 N or 1 5 O are produced and incorporated into a solution (of glucose) that can be injected into the body. As the radio isotope circulates throug..

They are electromagnetic radiations like X-rays having very short wavelength, in the range of 10 -10 m to 10 -13 m. They affect photographic plate. They are unaffected by electric and magnetic fields. Their ionizing power is low, (about one hundredth of b - particles). T..

They are not deflected by electric and magnetic fields. They affect photographic plates. The ionising power is very low compared to alpha-particles and beta-particles. They are electromagnetic waves like X-rays and light rays. The wavelength of these rays ar..

The b - particles are electrons - 1 e 0 with mass number zero and charge equal to -1. Since nucleus does not contain electrons, the emission of b - particle from a radioactive nucleus is believed to arise from the conversion of a neutron into proton and electro..

Modern Physics..

Emission of a and b -rays bring some changes in the nucleus of the atom and the new element formed as a result of these charges is called daughter element. There is conservation of both atomic number and mass number in the equation of a nuclear reaction. Thus, i) Sum of the mass..

>A common discharge tube is a long glass tube having two metal plates, sealed at its two ends as electrodes. It has a side tube through which air can be pumped out by using a vacuum pump, so that experiments can be performed at low pressur..

Beta rays are made up of streams of negatively charged particles similar to electrons. Thus, - particle has a unit negative charge and a negligible mass. They are electrons. Hence, - particle is represented as -1 e 0 . They affect photographic plate. They get deflected to the..