Yrast state | Article about yrast state by The Free Dictionary
yrast state[ē′rast ‚stāt]
An energy state of a nucleus whose energy is less than that of any other state with the same spin.
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Only the yrast state
of positive parity and spin In = [2.sup.+], [4.sup.+], [6.sup.+], [8.sup.+] and [10.sup.+] has been included.
This is due to the difficulty of establishing the deexcitation of a SD band into known yrast states
of normal deformed band.
For pure rotator, the energies of the yrast states