121SN IT DECAY 
Parent state: 6.29(8) keV
Half life: 43.9 Y(5)
Q(gs): () keV
Branch ratio:      0.776(20)
 image 

Gamma ray: 
   Energy(keV)    Intensity(rel)
      6.29( 8)        -
S. OHYA, Nuclear Data Sheet 111, 1619 (2010)

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