ADOPTED LEVELS, GAMMAS for 172Ir
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 31-DEC-2015
Author: Balraj Singh | Citation: Nucl. Data Sheets 75,199 (1995) | Cutoff date: 31-May-1995
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-6280 keV 30 | S(n)= 9030 keV 50 | S(p)= 370 keV 40 | Q(α)= 5991 keV 10 | ||
Reference: 2012WA38 |
References: | |||
A | 176Au α decay (1.05 S) | B | 176Au α decay (1.36 S) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
0+X | A | (3-,4-) | 4.4 s 3 % ε ≈ 98 % α ≈ 2 | ||||
0+Y | B | (7+) | 2.19 s 7 % ε = 90.5 11 % α = 9.5 11 | ||||
126.3+X 3 | A | 126.3 3 | [D,E2] | 0+X | (3-,4-) | ||
151.5+X 3 | A | 151.5 3 | [D,E2] | 0+X | (3-,4-) | ||
175.2+Y 3 | B | (8+,9+) | 175.2 3 | (M1) | 0+Y | (7+) | |
211.6+Y 3 | B | (8+,9+) | 211.6 3 | (M1) | 0+Y | (7+) | |
236.6+X 3 | A | 236.6 3 | 0+X | (3-,4-) | |||
500.0+X 5 | A | 500.0 5 | 0+X | (3-,4-) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
126.3+X | 126.3 3 | [D,E2] | 1.7 | α=1.7 15 | ||
151.5+X | 151.5 3 | [D,E2] | 1.0 | α=1.0 9 | ||
175.2+Y | (8+,9+) | 175.2 3 | (M1) | 1.243 | α=1.243 | |
211.6+Y | (8+,9+) | 211.6 3 | (M1) | 0.734 | α=0.734 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0+X | (3-,4-) | 4.4 s 3 % ε ≈ 98 % α ≈ 2 | Other %α<2 (2004GoZZ), also a low value is consistent with the measurements in 2014An10, but a precise branching ratio could not be extracted by 2014An10 due to detection sensitivity limit. |
0+Y | (7+) | 2.19 s 7 % ε = 90.5 11 % α = 9.5 11 | %α measured by 2014An10 by two methods: αγ-coin and αα-correlations, first giving a value of 10% 2 and the other 9% 1. Other measured values of %α: 23 3 (1992Sc16), 22 6 (2004GoZZ), <32 (1984ScZQ). |
175.2+Y | (8+,9+) | Possible configuration=π11/2-,(h11/2 orbital)#ν7/2-,(f7/2 or h9/2 orbital). | |
211.6+Y | (8+,9+) | Possible configuration=π11/2-,(h11/2 orbital)#ν7/2-,(f7/2 or h9/2 orbital). |
1992Sc16: 172Ir from 141Pr(36Ar,5n), E(36Ar)=234 MeV primary beam, helium-jet transport; monoisotopic targets; measured Eα, Iα, Eγ, Iγ, αγ coin, (α)(K x ray) coin.
2004GoZZ: 172Ir from α-decay of 176Au produced in 84Sr bombardment of Mo; fragment mass analyzer and double-sided Si strip detector (for recoils and decay α particles), recoil decay tagging technique. Measured Eα, Iα, recoil-α-γ coin, α(t), parent-daughter α correlations.
2014An10: measured α branching ratio from high-spin isomer of 172Ir
Q-value: S(2n)=20160 90 (syst), S(2p)=3040 40, Q(εp)=6580 40 (2012Wa38)