Method of producing excited states of atomic nuclei

Details Method of producing excited states of atomic nuclei Method of producing excited states of atomic nuclei

1974-01-09

1976-08-10

Smith, Alfred E.

Radiant energy

Irradiation of objects or material

Irradiation of semiconductor devices

250281, 250282, 250306, 250492B, G21G 100

Patent

active

039743900

ABSTRACT:
A method of producing excited states of atomic nuclei which comprises bombarding atoms with X rays or electrons, characterized in that (1) in the atoms selected to be produced in the excited state of their nuclei, (a) the difference between the nuclear excitation energy and the difference between the binding energies of adequately selected two electron orbits is small enough to introduce the nuclear excitation by electron transition, and (b) the system of the nucleus and the electrons in the case of ionizing an orbital electron in said atoms should satisfy the spin and parity conservation laws, and (2) the energy of the bombarding X rays or electrons should be larger than the binding energy of one of the said two electron orbits which is located at shorter distance from the atomic nucleus. According to the present invention, atomic nuclei can be excited in a relatively simple manner without requiring the use of large scale apparatus, equipment and production facilities, e.g., factories. It is also possible to produce radioactive substances or separate a particular isotope with an extremely high purity from a mixture of isotopes by utilizing nuclear excitation.

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