39AR B- DECAY (269 Y) 
Parent state: G.S.
Half life: 269 Y(3)
Q(gs): 565(5) keV
Branch ratio:        1.0
image 

Beta ray: 

    Max.E(keV)    Avg.E(keV)     Intensity(rel)  Spin    7/2-
     565.0( -)     218.8(21)       100                   3/2+
BALRAJ SINGH AND JOHN A. CAME, Nuclear Data Sheet 107, 225 (2006)

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