الفهرس 
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Abstract
The nuclear spectroscopy is the oldest of all branches in nuclear physics it coves a wide range of methods by which the basic information about the nuclear characteristics life time,energies spin and te parity of the nucler states type of nuclear decay and multiplarity of electromagnetic transitions can be signed the basic information about the nuclear properties are derived from studies of nuclear decay scheme the nuclear decy scheme is a systematic represntation of the energy emision and often a particle emission or capture occurring in transition to more stable nuclei gamma rays measurements yield information about some spectroscopic information of the nuclear state.