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Periodic Table of Elements

Pa - Protactinium

Protactinium Menu

Nuclides / Isotopes

Nuc-
lide		Atomic
Mass		NNAbun
%		SpinHalf LifeDMDTBR
%		Decay
Energy
(MeV)
Pa212 121Syn3+5.1msa   
Pa213 122Syn 5.3ms    
Pa214 123Syn 17ms    
Pa215215.019124Syn 14msaAc211 8.170
Pa216216.019125Syn 0.20saAc212~988.100
 0.20sECTh216~27.510
Pa217217.0183126Syn 4.9msaAc213 8.490
meta state 1.854MeVSyn 1.6msaAc213<=10010.344
Pa218218.02127Syn 0.12msaAc214 9.790
Pa219219.0199128Syn9/2-53nsaAc215 10.080
Pa220220.0219129Syn 0.78usECTh2203.0E -75.720
 0.78usaAc216 9.830
Pa221221.0219130Syn9/2-5.9usaAc217 9.250
Pa222222.0237131Syn 2.9msaAc218 8.850
Pa223223.023132Syn 6.5msaAc219 8.340
Pa224224.0256133Syn 0.79saAc220 7.694
Pa225225.0261134Syn 1.7saAc221 7.390
Pa226226.0279135Syn 1.8maAc222746.987
 1.8mECTh226262.834
Pa227227.0288136Syn5/2-38.3maAc223856.580
 38.3mECTh227151.019
Pa228228.031137Syn3+22hECTh228982.148
 22haAc22426.265
Pa229229.0321138Syn5/2+1.50dECTh22999.520.316
 1.50daAc2250.485.841
Pa230230.0345139Syn2-17.4dECTh23091.601.310
 17.4db-U2308.400.563
 17.4daAc2260.00325.439
Pa231231.0359140100.3/2-32760yECTh23113E -10 
 32760ySF <=3E -10 
 32760yaAc227 5.149
Pa232232.0386141Syn2-1.31dECTh2320.00300.495
 1.31db-U232 1.337
Pa233233.0402142Syn3/2-26.967db-U233 0.571
Pa234234.0433143Syn4+6.70hb-U234 2.197
meta state 0.074MeVSyn0-1.17mb-U23499.842.271
 1.17mIT 0.160.074
Pa235235.0454144Syn3/2-24.5mb-U235 1.410
Pa236236.049145Syn1-9.1mb-U236 2.900
Pa237237.051146Syn1/2+8.7mb-U237 2.250
Pa238238.0545147Syn3-2.3mSF <2.6E -63.460
 2.3mb-U238 3.460
Pa239239.057148Syn      
Pa240240.061149Syn      
NuclidePotential Parent Nuclides
Pa212 None known
Pa213 None known
Pa214 None known
Pa215 None known
Pa216 None known
Pa217 None known
meta state 1.854MeV None known
Pa218 None known
Pa219 None known
Pa220 None known
Pa221 None known
Pa222 Np226 (Syn)
Pa223 Np227 (Syn)
Pa224 Np228 (Syn)
Pa225 Np229 (Syn)
Pa226 Np230 (Syn)
Pa227 Np231 (Syn)
Pa228 U228 (Syn)
Pa229 Np233 (Syn) U229 (Syn)
Pa230 None known
Pa231 Np235 (Syn) Th231 (Syn) U231 (Syn)
Pa232 Np236 (Syn)
Pa233 Np237 (Syn) Th233 (Syn)
Pa234 Th234 (Syn)
meta state 0.074MeV None known
Pa235 Th235 (Syn)
Pa236 Th236 (Syn)
Pa237 None known
Pa238 None known
Pa239 None known
Pa240 None known

Key:

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