Sodium-34

Properties and data of the isotope ³⁴Na.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

Literature

Sodium-34 is a radioisotope of the chemical element sodium, which, in addition to the element-specific 11 protons, has 23 neutrons in the atomic nucleus, resulting in the mass number 34. The very short-lived, unstable and therefore radioactive nuclide, which can only be produced artificially, has no practical significance; The study of ³⁴Na serves exclusively academic purposes.

The first published description of the neutron-rich isotope dates back to 1983; sodium-34 was described as one of the products formed when an Ir template is irradiated with 10 GeV protons [1].

General data

Name of the isotope:Sodium-34; Na-34Symbol:³⁴Na or 3411NaMass number A:34 (= number of nucleons)Atomic number Z:11 (= number of protons)Neutrons N:23Isotopic mass:34.03401(64) u (atomic weight of Sodium-34)Nuclide mass:34.0279757 u (calculated nuclear mass without electrons)Mass excess:31.68011 MeVMass defect:0.25135842 u (per nucleus)Nuclear binding energy:234.13886008 MeV (per nucleus)
6.88643706 MeV (average binding energy per nucleon)Separation energy:S_N = 0.171(749) MeV (first neutron)
S_P = 21.739(848) MeV (first proton)Half-life:5.5(10) msDecay constant λ:126.02676010181 s^-1Specific activity α:2.232208533689 × 10⁺²⁴ Bq g^-1
60329960369995 Ci g^-1Spin and parity:
(nuclear angular momentum)1+Year of discovery:1983

Radioactive Decay

Half-life T_½ = 5.5(10) ms respectively 5.5 × 10^-3 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	³⁴Mg	ca. 35 %	23.36(60) MeV
β^-, n	³³Mg	ca. 15 %	18.646(599) MeV
β^-, 2n	³²Mg	ca. 50 %	17,573 MeV

Parent Nuclides

Direct parent isotope is: ³⁴Ne.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 23) and isobaric (same nucleon number A = 34) with Sodium-34. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 23	Isobar A = 34
10	³³Ne	³⁴Ne
11	³⁴Na	³⁴Na
12	³⁵Mg	³⁴Mg
13	³⁶Al	³⁴Al
14	³⁷Si	³⁴Si
15	³⁸P	³⁴P
16	³⁹S	³⁴S
17	⁴⁰Cl	³⁴Cl
18	⁴¹Ar	³⁴Ar
19	⁴²K	³⁴K
20	⁴³Ca	³⁴Ca
21	⁴⁴Sc
22	⁴⁵Ti
23	⁴⁶V
24	⁴⁷Cr
25	⁴⁸Mn
26	⁴⁹Fe
27	⁵⁰Co
28	⁵¹Ni

External data and identifiers

Adopted Levels, Gammas:NuDat 34Na

Literature and References

[1] - M. Langevin et al.:
³⁵Na: A new neutron-rich sodium isotope.
In: Physics Letters B, 125, 2-3, 116-118, (1983), DOI 10.1016/0370-2693(83)91248-0.

[2] - Yu-Xuan Luo et al.:
Investigation of exotic structure in ³⁴Na by complex momentum representation combined with Green´s function method.
In: Journal of Physics G, 47, 085105, (2020), DOI 10.1088/1361-6471/ab92e2.

[3] - Manju, Jagjit Singh, Shubhchintak, R. Chatterjee:
Scaling with deformation in probable p-wave halo ³⁴Na.
In: Journal of Physics: Conference Series, 1643, 012094, (2020), DOI 10.1088/1742-6596/1643/1/012094.