¹⁸¹Ta-Tantalum

 
181Ta has 73 protons and 108 neutrons.
181Ta is a stable isotope.
The mass excess of 181Ta is -48439.064 with an uncertainty of ±1.576.


The mass was measured using a Penning Trap and Nuclear Physics and the related equations include:

Influence				 Equations

         32.1%	   	           181Ta(n, γ)182Ta 1 
              27.3%	   	       183W35Cl-181Ta37Cl 2 
           23.5%	   	            181TaO-202Tl0.975 3 
            
	
			 	 






Reference

1. R.G. Helmer, R.C. Greenwood, C.W. Reich (1971) Level structure of 182Ta
 Nuclear Physics A  168 (3)
https://www.sciencedirect.com/science/article/pii/0375947471905410

2. K.S. Sharma, R.J. Ellis, V.P. Derenchuk, R.C. Barber, H.E. Duckworth (1980) Atomic mass of 180Ta, a naturally occurring isomer
 Physics Letters B  91(2)
https://www.sciencedirect.com/science/article/abs/pii/0370269380904335

3. A. Welker, P. Filianin, N.A.S. Althubiti, D. Atanasov, K. Blaum, T.E. Cocolios, S. Eliseev, F. Herfurth, S. Kreim, D. Lunney, V. Manea, D. Neidherr, Yu. Novikov, M. Rosenbusch, L. Schweikhard, F. Wienholtz, R.N. Wolf, K. Zuber
(2017) Precision electron-capture energy in 202Pb and its relevance for neutrino mass determination  European Physical Journal A  53(153)
https://epja.epj.org/articles/epja/abs/2017/07/10050_2017_Article_896/10050_2017_Article_896.html