255NO A DECAY 
Parent state: G.S.
Half life: 3.52 M(21)
Q(gs): 8428(3) keV
Branch ratio:       0.30( 5)
 image 

Alpha ray: for absolute intensity multiply by 0.30(5)
   Energy(keV)     Intensity(rel) Hindrance
      8296( 6)       1.2( 4)      4700    
      8233( 4)       6.9( 8)       510    
      8100( 3)      29.7(15)        42    
      8057( 4)      10.3( 9)        86    
      8001( 4)       6.8( 8)        82    
    8074.1( -)       0.5(AP)       740(AP)
      7909( 3)      16.6(12)        16    
      7842( 4)       4.3( 7)        36    
      7748( 3)      18.4(15)       3.8    
      7726( 6)       2.7( 9)        22    
      7702( 5)       2.7( 6)        18    

Gamma ray: for absolute intensity multiply by 0.40(10)
   Energy(keV)    Intensity(rel)
       3.4( 3)        -     
      63.9( 8)       1.4( 9)
     163.3( 2)       8.4(22)
     166.7( 2)       3.9(15)
     192.0( 2)       100(12)
     194.9( 2)      12.9(30)
     200.0( 1)        31( 5)
     353.9( 4)       4.0(18)
     358.4( 2)        24( 5)
E. BROWNE, J. K. TULI, Nuclear Data Sheet 114, 1041 (2013)

Please e-mail to jhchang@kaeri.re.kr for any comment. Thank you.