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Table of Isotopes decay data

success fail Apr MAY Jun 19 2009 2012 2013 17 captures 25 Mar 2003 - 19 May 2012 About this capture COLLECTED BY Organization: Internet Archive The Internet Archive discovers and captures web pages through many different web crawls. At any given time several distinct crawls are running, some for months, and some every day or longer. View the web archive through the Wayback Machine. Collection: Wide Crawl started April 2012 Web wide crawl with initial seedlist and crawler configuration from April 2012. TIMESTAMPS


WWW Table of Radioactive Isotopes
  40K 1921
Half life:1.277E+9 y 8 Abundance:0.0117 1 % Jp:4- Sn (keV):7799.50 8 Sp (keV):7582 5 Prod. mode:Naturally occurring
ENSDF citation:NP A521,1 (1990) Literature cut-off date:1-Jun-1990 Author(s):P.M. Endt References since cut-off: Decay properties:
ModeBranching (%)Q-value (keV)References b- 89.28 13 1311.09 12   e+b+ 10.72 13 1504.9 3     Most Recent ENSDF Data (12/2002)
ModeData set nameDisplay data
	
TORI Data (1999)

Gammas from 40K (1.277E+9 y 8)


Eg (keV)Ig (%)Decay mode
1460.830 11 e+b+
	
	
X-rays from 40K (1.277E+9 y 8)
E (keV)I (%)Assignment
0.251 0.0010 3 Ar Lb1 0.310 0.00028 10 Ar Lb4 0.310 0.00044 15 Ar Lb3 2.880 3.3E-08 4 Ar Ka3 2.955 0.31 3 Ar Ka2 2.957 0.62 6 Ar Ka1 3.190 0.025 3 Ar Kb3 3.190 0.049 5 Ar Kb1
	
	
Betas from 40K (1.277E+9 y 8)
Eb endpoint (keV)Ib (%)Decay mode
44.04 10.67 18 e 482.9 0.00104 11 b+ 1311.09 89.28 18 b- 1504.9 0.047 5 e
	


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