Silver-115

Properties and data of the isotope ¹¹⁵Ag.

Content

General data

Name of the isotope:Silver-115; Ag-115Symbol:¹¹⁵Ag or 11547AgMass number A:115 (= number of nucleons)Atomic number Z:47 (= number of protons)Neutrons N:68Isotopic mass:114.908767(20) u (atomic weight of Silver-115)Nuclide mass:114.8829851 u (calculated nuclear mass without electrons)Mass excess:-84.98299 MeVMass defect:1.048223792 u (per nucleus)Nuclear binding energy:976.41417291 MeV (per nucleus)
8.49055803 MeV (average binding energy per nucleon)Separation energy:S_N = 8.123(19) MeV (first neutron)
S_P = 8.781(20) MeV (first proton)Half-life:20.0(5) minDecay constant λ:0.00057762265046662 s^-1Specific activity α:3.051337688596 × 10⁺¹⁸ Bq g^-1
82468586.178284 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-Year of discovery:1949

Radioactive Decay

Half-life T_½ = 20.0(5) min (minutes) respectively 1.200 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹¹⁵Cd	100 %	3.102(18) MeV

Parent Nuclides

Direct parent isotopes are: ¹¹⁵Pd, ²⁵²Cf.

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear Isomer	Excitation Energy	Half-life	Spin
^115mAg	41.16(10) keV	18.0(7) s	7/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 68) and isobaric (same nucleon number A = 115) with Silver-115. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 68	Isobar A = 115
38	¹⁰⁶Sr
39	¹⁰⁷Y
40	¹⁰⁸Zr
41	¹⁰⁹Nb	¹¹⁵Nb
42	¹¹⁰Mo	¹¹⁵Mo
43	¹¹¹Tc	¹¹⁵Tc
44	¹¹²Ru	¹¹⁵Ru
45	¹¹³Rh	¹¹⁵Rh
46	¹¹⁴Pd	¹¹⁵Pd
47	¹¹⁵Ag	¹¹⁵Ag
48	¹¹⁶Cd	¹¹⁵Cd
49	¹¹⁷In	¹¹⁵In
50	¹¹⁸Sn	¹¹⁵Sn
51	¹¹⁹Sb	¹¹⁵Sb
52	¹²⁰Te	¹¹⁵Te
53	¹²¹I	¹¹⁵I
54	¹²²Xe	¹¹⁵Xe
55	¹²³Cs	¹¹⁵Cs
56	¹²⁴Ba	¹¹⁵Ba
57	¹²⁵La
58	¹²⁶Ce
59	¹²⁷Pr
60	¹²⁸Nd
61	¹²⁹Pm
62	¹³⁰Sm
63	¹³¹Eu