Secondary Emission

Emissions

The emission of penetraing alpha , beta particle (""_(2) ^(4) He and ""_(-1)^(0)e respectively ) along with gamma - radiation (hv) was noticed from unstable nuclei . All elements having Z gt 82 show this phenomenon . The emission was explained in terms of low binding energy (giving alpha - decay) high n/p ratio (neutron decay) , gamma from a radioactive nuclide is secondary emission The emission of penetrating rays from a radioactive species can be shielded by

The emission of penetraing alpha , beta particle (""_(2) ^(4) He and ""_(-1)^(0)e respectively ) along with gamma - radiation (hv) was noticed from unstable nuclei . All elements having Z gt 82 show this phenomenon . The emission was explained in terms of low binding energy (giving alpha - decay) high n/p ratio (neutron decay) , gamma from a radioactive nuclide is secondary emission The binding energy of the hydrogen nucleus is :

The emission of penetraing alpha , beta particle (""_(2) ^(4) He and ""_(-1)^(0)e respectively ) along with gamma - radiation (hv) was noticed from unstable nuclei . All elements having Z gt 82 show this phenomenon . The emission was explained in terms of low binding energy (giving alpha - decay) high n/p ratio (neutron decay) , gamma from a radioactive nuclide is secondary emission. An element of group III with At. no. 90 and mass number of 238 undergoes decay of one alpha - particle . The newly formed element belongs to :

Secondary tissues such as secondary xylen develops from

Field Emission

During radioactive disintegration, beta -ray emission is accompanied by the emission of

Thermionic Emission

Photoelectric Emission