Titanium-61

Properties and data of the isotope ⁶¹Ti.

Content

General data

Name of the isotope:Titanium-61; Ti-61Symbol:⁶¹Ti or 6122TiMass number A:61 (= number of nucleons)Atomic number Z:22 (= number of protons)Neutrons N:39Isotopic mass:60.98245(43) u (atomic weight of Titanium-61)Nuclide mass:60.9703815 u (calculated nuclear mass without electrons)Mass excess:-16.34772 MeVMass defect:0.527632428 u (per nucleus)Nuclear binding energy:491.48644089 MeV (per nucleus)
8.05715477 MeV (average binding energy per nucleon)Separation energy:S_N = 2.09(50) MeV (first neutron)
S_P = 19.59(64) MeV (first proton)Half-life:15(4) msDecay constant λ:46.20981203733 s^-1Specific activity α:4.638033286666 × 10⁺²³ Bq g^-1
12535225099099 Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2-)Year of discovery:1997

Radioactive Decay

Half-life T_½ = 15(4) ms respectively 1.5 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	⁶¹V	100 %	14.16(98) MeV
β^-, n	⁶⁰V	?	8.82(46) MeV
β^-, 2n	⁵⁹V	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 39) and isobaric (same nucleon number A = 61) with Titanium-61. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 39	Isobar A = 61
21	⁶⁰Sc	⁶¹Sc
22	⁶¹Ti	⁶¹Ti
23	⁶²V	⁶¹V
24	⁶³Cr	⁶¹Cr
25	⁶⁴Mn	⁶¹Mn
26	⁶⁵Fe	⁶¹Fe
27	⁶⁶Co	⁶¹Co
28	⁶⁷Ni	⁶¹Ni
29	⁶⁸Cu	⁶¹Cu
30	⁶⁹Zn	⁶¹Zn
31	⁷⁰Ga	⁶¹Ga
32	⁷¹Ge	⁶¹Ge
33	⁷²As
34	⁷³Se
35	⁷⁴Br
36	⁷⁵Kr
37	⁷⁶Rb
38	⁷⁷Sr
39	⁷⁸Y
40	⁷⁹Zr
42	⁸¹Mo