Beryllium-13

Properties and data of the isotope ¹³Be.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

Literature

Beryllium-13 is a radioisotope of the chemical element Beryllium, which, in addition to the element-specific 4 protons, has 9 neutrons in the atomic nucleus, resulting in the mass number 13. The very short-lived, unstable and therefore radioactive nuclide, which can only be produced artificially, has no practical significance; The study of ¹³Be is for academic purposes only.

See also: List of individual Beryllium isotopes (and general data sources).

General data

Name of the isotope:Beryllium-13; Be-13Symbol:¹³Be or 134BeMass number A:13 (= number of nucleons)Atomic number Z:4 (= number of protons)Neutrons N:9Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):2.25 (= neutron-proton ratio)Neutron excess (N-Z):5Isotopic mass:13.036135(11) u (atomic weight of Beryllium-13)Nuclide mass:13.0339407 u (calculated nuclear mass without electrons)Mass excess:33.65954 MeVMass defect:0.073149372000001 u (per nucleus)Nuclear binding energy:68.13820112 MeV (per nucleus)
5.24140009 MeV (average binding energy per nucleon)Separation energy:
S_P = 22.639(32) MeV (first proton)Half-life:2.7(18) zsDecay constant λ:2.567211779851 × 10⁺²⁰ s^-1Specific activity α:1.185942819631 × 10⁺⁴³ Bq g^-1
3.205250863868 × 10⁺³² Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2-)Mirror nucleus:Fluorine-13Year of discovery:1983

Radioactive Decay

Half-life T_½ = 2.7(18) zs respectively 2.7 × 10^-21 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
n	¹²Be	?

Parent Nuclides

Direct parent isotope is: ¹³Be.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 9) and isobaric (same nucleon number A = 13) with Beryllium-13. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 9	Isobar A = 13
3	¹²Li	¹³Li
4	¹³Be	¹³Be
5	¹⁴B	¹³B
6	¹⁵C	¹³C
7	¹⁶N	¹³N
8	¹⁷O	¹³O
9	¹⁸F	¹³F
10	¹⁹Ne
11	²⁰Na
12	²¹Mg
13	²²Al
14	²³Si
15	²⁴P

External data and identifiers

Adopted Levels, Gammas:NuDat 13Be

Literature and References

[1] - A. Corsi et al.:
Structure of ¹³Be probed via quasi-free scattering.
In: Physics Letters B, 797, 134843, (2019), DOI 10.1016/j.physletb.2019.134843.

[2] - K. L. Jones et al.:
Status of experimental knowledge on the unbound nucleus ¹³Be.
In: Frontiers in Physics, 11, (2023), DOI 10.3389/fphy.2023.1242668.