Difference between revisions of "PAA Bibliography"

From New IAC Wiki
Jump to navigation Jump to search
Line 27: Line 27:
  
  
−
=NAA=
 
  
−
==Ancient Silver==
 
−
 
−
[[File:Meyers_Zelst_Sayre_BNL-21513.pdf]]  This paper suggest that the gold and iridium content can be used to distinguish between Sasanian (Iran) coins and other silver coins.
 
−
 
−
 
−
===Activating gold===
 
−
 
−
====Neutron knock out====
 
−
<math>{197 \atop\; }Au (\gamma,n){196 \atop \; }Au</math>
 
−
 
−
 
−
Au-196 decays with a half life 6.183 days of by electron capture to Platinum (Pt-196) 92% of the time or the rest of the time it Beta decay to Hg-196
 
−
 
−
The highest relative intensity gamma ray has an energy of 333.03 keV  after Au-196 undergoes electron capture.  Pt-196 is stable.
 
−
 
−
 
−
If Pt-196 is in an excited state, then  there are two lifetimes to de-excite of 8.1 seconds and  9.6 hours .  For the 9.6 hours state then dominant intensities are a photon emission energies of 188.27 and 147.81 keV.
 
−
 
−
====Proton Knockout====
 
−
 
−
<math>{197 \atop\; }Au (\gamma,p){196 \atop \; }Pt</math>
 
−
 
−
Pt-196 is naturally occurring in 25% of the Platinum
 
−
 
−
You will need to produce it in an excited state (356, 689, 877,1526 keV) in order to get a gamma.
 
−
 
−
===Activation Iridium===
 
−
 
−
There are two naturally occuring isotopes of Iridium (37% Ir-191, 63%Ir-193)
 
−
 
−
====Neutron knock out====
 
−
<math>{191 \atop\; }Ir (\gamma,n){190 \atop \; }Ir</math>
 
−
 
−
After 11.78 days Ir-190 electron captures to Os-190 (dominant decay) with the most intense line emission of 186.68 keV.
 
−
 
−
====Proton knock out====
 
−
<math>{191 \atop\; }Ir (\gamma,n){190 \atop \; }Os</math>
 
−
 
−
 
−
<math>{193 \atop\; }Ir (\gamma,n){192 \atop \; }Os</math>
 
−
 
−
 
−
 
−
Osmium 192 and 190 are stable.
 
  
 
[[PAA_Research]]
 
[[PAA_Research]]

Revision as of 16:51, 15 May 2013

References

Web Sites

http://ie.lbl.gov/toi/radsearch.asp

http://www-nds.iaea.org

http://www.nist.gov/pml/data/xcom/index.cfm

http://yoyo.cc.monash.edu.au/~simcam/ton/ 

www-nds.iaea.org

Refereed Journals

File:Gelen JRMC V266 2005 p485.pdf


Books

Segebade_Weise_Lutz_PAA

Detection Limits

http://arxiv.org/abs/1301.1528v1



PAA_Research

Retrieved from "https://wiki.iac.isu.edu/index.php?title=PAA_Bibliography&oldid=84412"