Silicon-41

Properties and data of the isotope ⁴¹Si.

Content

General data

Name of the isotope:Silicon-41; Si-41Symbol:⁴¹Si or 4114SiMass number A:41 (= number of nucleons)Atomic number Z:14 (= number of protons)Neutrons N:27Isotopic mass:41.01301(60) u (atomic weight of Silicon-41)Nuclide mass:41.00533 u (calculated nuclear mass without electrons)Mass excess:12.11874 MeVMass defect:0.33049318 u (per nucleus)Nuclear binding energy:307.85241421 MeV (per nucleus)
7.50859547 MeV (average binding energy per nucleon)Separation energy:S_N = 1.38(65) MeV (first neutron)
S_P = 22.76(68) MeV (first proton)Half-life:20.0(25) msDecay constant λ:34.657359027997 s^-1Specific activity α:5.090524339024 × 10⁺²³ Bq g^-1
13758173889255 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Year of discovery:1989

Radioactive Decay

Half-life T_½ = 20.0(25) ms respectively 2.00 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁴¹P	100 %	17.10(57) MeV
β^-, n	⁴⁰P	> 0 %	12.16(58) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 27) and isobaric (same nucleon number A = 41) with Silicon-41. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 27	Isobar A = 41
11	³⁸Na
12	³⁹Mg
13	⁴⁰Al	⁴¹Al
14	⁴¹Si	⁴¹Si
15	⁴²P	⁴¹P
16	⁴³S	⁴¹S
17	⁴⁴Cl	⁴¹Cl
18	⁴⁵Ar	⁴¹Ar
19	⁴⁶K	⁴¹K
20	⁴⁷Ca	⁴¹Ca
21	⁴⁸Sc	⁴¹Sc
22	⁴⁹Ti	⁴¹Ti
23	⁵⁰V	⁴¹V
24	⁵¹Cr	⁴¹Cr
25	⁵²Mn
26	⁵³Fe
27	⁵⁴Co
28	⁵⁵Ni
29	⁵⁶Cu
30	⁵⁷Zn
31	⁵⁸Ga
32	⁵⁹Ge