Titanium-41

Properties and data of the isotope ⁴¹Ti.

Contents

General data

Name of the isotope:Titanium-41; Ti-41Symbol:⁴¹Ti or 4122TiMass number A:41 (= number of nucleons)Atomic number Z:22 (= number of protons)Neutrons N:19Isotopic mass:40.98315(3) u (atomic weight of Titanium-41)Nuclide mass:40.9710815 u (calculated nuclear mass without electrons)Mass excess:-15.69567 MeVMass defect:0.353634108 u (per nucleus)Nuclear binding energy:329.4080498 MeV (per nucleus)
8.03434268 MeV (average binding energy per nucleon)Separation energy:S_N = 14.92(16) MeV (first neutron)
S_P = 2.463(28) MeV (first proton)Half-life:81.9(5) msDecay constant λ:8.4633355379725 s^-1Specific activity α:1.274184968864 × 10⁺²³ Bq g^-1
3443743159093.2 Ci g^-1Spin and parity:
(nuclear angular momentum)3/2+Mirror nucleus:Potassium-41Year of discovery:1964

Radioactive Decay

Half-life T_½ = 81.9(5) ms respectively 8.19 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC, p	⁴⁰Ca	> 99.9 %	12.945(28) MeV
EC	⁴¹Sc	< 0.1 %

Parent Nuclides

Direct parent isotope is: ⁴²V.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 19) and isobaric (same nucleon number A = 41) with Titanium-41. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 19	Isobar A = 41
8	²⁷O
9	²⁸F
10	²⁹Ne
11	³⁰Na
12	³¹Mg
13	³²Al	⁴¹Al
14	³³Si	⁴¹Si
15	³⁴P	⁴¹P
16	³⁵S	⁴¹S
17	³⁶Cl	⁴¹Cl
18	³⁷Ar	⁴¹Ar
19	³⁸K	⁴¹K
20	³⁹Ca	⁴¹Ca
21	⁴⁰Sc	⁴¹Sc
22	⁴¹Ti	⁴¹Ti
23	⁴²V	⁴¹V
24	⁴³Cr	⁴¹Cr
25	⁴⁴Mn
26	⁴⁵Fe
27	⁴⁶Co