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Isotopes of Titanium

List, data and properties of all known isotopes of Titanium as well as radioactive decay products and intermediate products.

 

Titanium isotopes

All atomic nuclei of the chemical element titanium are summarized under titanium isotopes; these all consist of an atomic nucleus with 22 protons and, in the uncharged state, 22 electrons. The difference between each titanium isotope is based on the number of neutrons in the nucleus.

 

Naturally Occurring Titanium Isotopes

Titanium occurs naturally in the form of its stable isotopes Ti-46 to Ti-50; the atomic nuclei of all other titanium isotopes are man-made radionuclides.

Atomic Mass maQuantityHalf-lifeSpin
Titanium
Isotopic mixture
47,867 u100 %
Isotope 46Ti45,952628(3) u8,25(3) %stable0+
Isotope 47Ti46,951759(3) u7,44(2) %stable5/2-
Isotope 48Ti47,947942(3) u73,72(3) %stable0+
Isotope 49Ti48,947866(3) u5,41(2) %stable7/2-
Isotope 50Ti49,944787(3) u5,18(2) %stable0+

 

Isotope Table: Titanium

 

Atomic Properties

Isotope
Nuclide
ZANNameAtomic Mass
[Nuclear Mass]
{Mass Excess}
Spin I
(h/2π)
μParent
123456789
38Ti223816Titanium-3838.01167(32) u
[37.9996015 u]
{10.87053 MeV}
0+
39Ti223917Titanium-3939.00236(21) u
[38.9902915 u]
{2.19833 MeV}
(3/2+)40V
40Ti224018Titanium-4039.99050(17) u
[39.9784315 u]
{-8.84919 MeV}
0+41V
42Cr
41Ti224119Titanium-4140.98315(3) u
[40.9710815 u]
{-15.69567 MeV}
3/2+42V
42Ti224220Titanium-4241.9730490(3) u
[41.9609805 u]
{-25.10469 MeV}
0+43Cr
43Ti224321Titanium-4342.968523(8) u
[42.9564545 u]
{-29.32064 MeV}
7/2-0.85(2)43V
43m1Ti224321Titanium-43m142.968523(8) u
[42.9564545 u]
{-29.32064 MeV}
(3/2+)
43m2Ti224321Titanium-43m242.968523(8) u
[42.9564545 u]
{-29.32064 MeV}
(19/2-)+ 7.22(1)
44Ti224422Titanium-4443.9596901(8) u
[43.9476216 u]
{-37.54843 MeV}
0+44V
45Ti224523Titanium-4544.9581256(11) u
[44.9460571 u]
{-39.00575 MeV}
7/2-0.095(2)45V
46Ti224624Titanium-4645.952628(3) u
[45.9405595 u]
{-44.12673 MeV}
0+46V
46Sc
46Ca
47Ti224725Titanium-4746.951759(3) u
[46.9396905 u]
{-44.9362 MeV}
5/2--0.78814(11)47V
47Sc
48Ti224826Titanium-4847.947942(3) u
[47.9358735 u]
{-48.49171 MeV}
0+48V
48Sc
48Ca
49Ti224927Titanium-4948.947866(3) u
[48.9357975 u]
{-48.56251 MeV}
7/2--1.10370(14)49V
49Sc
50Ti225028Titanium-5049.944787(3) u
[49.9327185 u]
{-51.43058 MeV}
0+50V
50Sc
50Cr
51Ti225129Titanium-5150.9466096(5) u
[50.9345411 u]
{-49.73284 MeV}
3/2-51Sc
52Ti225230Titanium-5251.946892(8) u
[51.9348235 u]
{-49.46978 MeV}
0+52Sc
53Ti225331Titanium-5352.94972(11) u
[52.9376515 u]
{-46.83552 MeV}
(3/2)-53Sc
54Ti225432Titanium-5453.95102(9) u
[53.9389515 u]
{-45.62458 MeV}
0+54Sc
55Ti225533Titanium-5554.95527(17) u
[54.9432015 u]
{-41.66573 MeV}
(1/2)-55Sc
56Ti225634Titanium-5655.95779(13) u
[55.9457215 u]
{-39.31836 MeV}
0+56Sc
57Ti225735Titanium-5756.96359(28) u
[56.9515215 u]
{-33.9157 MeV}
(5/2-)57Sc
58Ti225836Titanium-5857.96660(21) u
[57.9545315 u]
{-31.1119 MeV}
0+58Sc
59Ti225937Titanium-5958.97261(21) u
[58.9605415 u]
{-25.51362 MeV}
(5/2-)59Sc
60Ti226038Titanium-6059.97603(32) u
[59.9639615 u]
{-22.32791 MeV}
0+60Sc
61Ti226139Titanium-6160.98245(43) u
[60.9703815 u]
{-16.34772 MeV}
(1/2-)
62Ti226240Titanium-6261.98658(43) u
[61.9745115 u]
{-12.50065 MeV}
0+
63Ti226341Titanium-6362.99383(54) u
[62.9817615 u]
{-5.74732 MeV}
1/2-

 

Radioactive Decay Properties

IsotopeRadioactive DecayAEExtern
Half-lifeDecay ModeProbabilityEnergy
1101112131415
Ti-38120 ns2p → 36Ca?AL
Ti-3928.5(9) msEC β+39Sc
EC p; EC 2p

?
16.37(20) MeV
AL
Ti-4052.4(3) msEC → 40Sc
EC, p → 39Ca
56.99 %
43.01 %
11.67(16) MeV
AL
Ti-4181.9(5) msEC, p → 40Ca
EC → 41Sc
> 99.9 %
< 0.1 %
12.945(28) MeV
AL
Ti-42208.65(80) msEC/β+42Sc100 %7.0165(3) MeVAL
Ti-43509(5) msEC/β+43Sc
EC, p 42Ca
100 %
?
6.867(7) MeV
AL
Ti-43m111.9(3) μs313(1) keVAL
Ti-43m2556(6) ns3066.4(10) keVAL
Ti-4459.1(3) aEC → 44Sc100 %0.2674(19) MeVAL
Ti-45184.8(5) minEC β+45Sc100 %2.0621(11) MeVAL
Ti-46stableAL
Ti-47stableAL
Ti-48stableAL
Ti-49stableAL
Ti-50stableAL
Ti-515.76(1) minβ-51V100 %2.4710(6) MeVAL
Ti-521.7(1) minβ-52V100 %1.974(7) MeVAL
Ti-5332.7(9) sβ-53V100 %5.02(10) MeVAL
Ti-542.1 sβ-54V100 %4.27(8) MeVAL
Ti-551.3(1) sβ-55V100 %7.48(16) MeVAL
Ti-56200(5) msβ-56V
β-, n → 55V
100 %
6.83(19) MeV
1.75(15) MeV
AL
Ti-5798(5) msβ-57V
β-, n → 56V
100 %
?
10.50(27) MeV
4.17(31) MeV
AL
Ti-5858(9) msβ-58V
β-, n → 57V
100 %
?
9.29(22) MeV
5.23(22) MeV
AL
Ti-5928.5(25) msβ-59V100 %12.32(26) MeVAL
Ti-6022(2) msβ-60V
β-, n → 59V
β-, 2n → 58V
100 %
?
?
10.91(37) MeV
7.43(34) MeV
AL
Ti-6115(4) msβ-61V
β-, n → 60V
β-, 2n → 59V
100 %
?
?
14.16(98) MeV
8.82(46) MeV
AL
Ti-62620 nsβ-, → 62V
β-, n → 61V
?
?
12.98(50) MeV
9.93(98) MeV
AL
Ti-63360 nsβ-, → 63V
β-, n → 62V
?
?
16.14(64) MeV
11.65(58) MeV
AL

 

Notes (related to the columns):

1 - nuclide, isotope symbol.
2 - Z = number of protons (atomic number).
3 - Mass number A.
4 - N = number of neutrons.
5 - Identification of the Titanium isotope.
6 - Relative atomic mass of the Titanium isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
7 - Nuclear spin I, unit: h/2π.
8 - Nuclear magnetic moment μmag.
9 - Source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.
10 - Decay: Half-live of the Titanium isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
11 - Decay: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
12 - Decay percentage in percent (%).
13 - Decay energy; Particle energy related to decay type.
14 - AE = Excitation energy for metastable nuclei.
15 - Other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

NMR active Titanium nuclides

Nuclide
quantity 1)
spin
Nuclear magnetic
moment
μ/μN
Gyromagnetic
ratio
107 rad T-1 s-1
Quadrupole
moment
Q fm-2
Resonant
frequency
v0 bei 1 T
Relative
sensitivity
H0 = const.
v0 = const. 2)
47Ti
7,44(2) %
5/2-
-0,78814(11)- 1,5105+ 30,2(10)2,40410,00210
0,6588
49Ti
5,41(2) %
7/2-
-1,10370(14)- 1,5109+ 24,7(11)2,40480,00378
1,1861

1) Quantity Percentage of natural occurrence.

2) Related to 1H = 1,000.

 

Radiation Protection

According to the Radiation Protection Ordinance (StrlSchV 2018, Germany), the following values (columns 1 to 7) apply to the handling of Titanium radionuclides:

NuclideLimit ValueHASS limitSCDaughter NuclidesHalf-life
Ti-44+105 Bq0,1 Bq/g0,03 TBqSc-4460.0 a
Ti-45106 Bq10 Bq/g3.1 h

(HASS = High-Activity Sealed Radioactive Sources; SC = surface contamination)

 

Literature Sources and References

Properties of the Titanium nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Titanium: NMR properties - 47Ti-NMR, 49Ti-NMR

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

[9] - D. Meierfrankenfeld, A. Bury, M. Thoennessen:
Discovery of scandium, titanium, mercury, and einsteinium isotopes.
In: Atomic Data and Nuclear Data Tables, (2011), DOI 10.1016/j.adt.2010.11.001.

 


Category: Isotopes

Last update: 05.07.2020



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