Nickel-49

Properties and data of the isotope ⁴⁹Ni.

Content

General data

Name of the isotope:Nickel-49; Ni-49Symbol:⁴⁹Ni or 4928NiMass number A:49 (= number of nucleons)Atomic number Z:28 (= number of protons)Neutrons N:21Isotopic mass:49.00880(64) u (atomic weight of Nickel-49)Nuclide mass:48.9934402 u (calculated nuclear mass without electrons)Mass excess:8.19715 MeVMass defect:0.392264132 u (per nucleus)Nuclear binding energy:365.39168537 MeV (per nucleus)
7.45697317 MeV (average binding energy per nucleon)Separation energy:S_N = 16.66(78) MeV (first neutron)
S_P = 0.59(78) MeV (first proton)Half-life:7.5(10) msDecay constant λ:92.419624074659 s^-1Specific activity α:1.135844886530 × 10⁺²⁴ Bq g^-1
30698510446773 Ci g^-1Spin and parity:
(nuclear angular momentum)(7/2-)~Mirror nucleus:Scandium-49Year of discovery:1996

Radioactive Decay

Half-life T_½ = 7.5(10) ms respectively 7.5 × 10^-3 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	⁴⁹Co	17 %	18.08(72) MeV
β⁺, p	⁴⁸Fe	83(13) %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 21) and isobaric (same nucleon number A = 49) with Nickel-49. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 21	Isobar A = 49
9	³⁰F
10	³¹Ne
11	³²Na
12	³³Mg
13	³⁴Al
14	³⁵Si
15	³⁶P
16	³⁷S	⁴⁹S
17	³⁸Cl	⁴⁹Cl
18	³⁹Ar	⁴⁹Ar
19	⁴⁰K	⁴⁹K
20	⁴¹Ca	⁴⁹Ca
21	⁴²Sc	⁴⁹Sc
22	⁴³Ti	⁴⁹Ti
23	⁴⁴V	⁴⁹V
24	⁴⁵Cr	⁴⁹Cr
25	⁴⁶Mn	⁴⁹Mn
26	⁴⁷Fe	⁴⁹Fe
27	⁴⁸Co	⁴⁹Co
28	⁴⁹Ni	⁴⁹Ni