221AC A DECAY 
Parent state: G.S.
Half life: 52 MS(2)
Q(gs): 7783(50) keV
Branch ratio:        1.0
image 

Alpha ray: 
   Energy(keV)     Intensity(rel) Hindrance
      7645(10)        68( 5)       6.3(11)
      7440(15)        21( 5)       4.3(13)
      7377(10)         9( 2)       6.2(17)
      7170(10)       2.4(10)       4.4(20)
Y. A. AKOVALI, Nuclear Data Sheet 100, 141 (2003)

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