ADOPTED LEVELS for 23O
Authors: M.S. Basunia, A. Chakraborty | Citation: Nucl. Data Sheets 171, 1 (2021) | Cutoff date: 1-Jun-2020
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=11.34×103 keV 13 | S(n)= 2.73×103 keV 13 | S(p)= 2.443×104 keV 24 | Q(α)= -2.022×104 keV 16 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 1H(24O,23O) | B | 2H(22O,P23O) |
| C | 9Be(24O,23O) | D | 9Be(26F,2N22O) |
| E | 9Be(26Ne,2PNX) | F | C(24O,N23O) |
| G | C(23O,22O),PB(23O,22O) | H | 12C(24F,P23O) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0.0 | ABCDEFGH | 1/2+ | 97 ms 8 % β- = 100 % β-n = 7 2 |
| 2.78E3 13 | A DE | (5/2)+ | < 5 keV % n ≈ 100 |
| 4000 20 | B | (3/2)+ | |
| 5300 40 | B |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 1/2+ | 97 ms 8 % β- = 100 % β-n = 7 2 | <r2>1/2(23N)=2.95~fm~23 (matter radius) (2011Ka36) using Fermi density and 2.97 fm 11 using harmonic oscillator density; deduced using Glauber model (2011Ka36). Also 3.20 fm 4 and 3.24 fm 27 in 2001Oz03. E(level): <r2>1/2(23N)=2.95~fm~23 (matter radius) (2011Ka36) using Fermi density and 2.97 fm 11 using harmonic oscillator density; deduced using Glauber model (2011Ka36). Also 3.20 fm 4 and 3.24 fm 27 in 2001Oz03. |
| 2.78E3 | (5/2)+ | < 5 keV % n ≈ 100 | Γ: From (26Ne,2pnX) - 2008Ch07. Other: Γ=100~keV (2007Sc32 - (26Ne,2pnx)) and (2011Ho05 - (26F,2n22O)) - value should be considered as upper limit - see comments in (26Ne,2pnx). Same research group - 2007Sc32 and 2011Ho05. E(level): Γ: From (26Ne,2pnX) - 2008Ch07. Other: Γ=100~keV (2007Sc32 - (26Ne,2pnx)) and (2011Ho05 - (26F,2n22O)) - value should be considered as upper limit - see comments in (26Ne,2pnx). Same research group - 2007Sc32 and 2011Ho05. Unbound state. |
| 4000 | (3/2)+ | Possible configuration: νd3/2 (2007El02 - 2H(22O,p23O)). E(level): Possible configuration: νd3/2 (2007El02 - 2H(22O,p23O)). Unbound state. | |
| 5300 | It is a state in fp shell. Possible configuration: νp3/2 with S ≈ 1.0. Also a smaller probability for νf7/2 with S ≈ 0.02. (2007El02 - 2H(22O,p23O)). E(level): It is a state in fp shell. Possible configuration: νp3/2 with S ≈ 1.0. Also a smaller probability for νf7/2 with S ≈ 0.02. (2007El02 - 2H(22O,p23O)). Unbound state. |
1970Ar09 - First production - 232Th(22Ne,X), E=174~MeV
2000Oz01 - Measured production cross section 0.207 μb 64 for 23O from fragmentation of 40Ar on Be target, E |J1 GeV/nucleon.
2004St08: 9Be(36S,X),C(36S,X) E=77.5 MeV/nucleon. Recoil mass spectrometer, BaF2 coincidence array. Produced 7500 and 19620 23O nuclei using the Be and C targets, respectively. No gamma rays were observed in coincidence with 23O recoils suggesting that the first excited state lies above the neutron separation energy or below the detector threshold of 100 keV.
Other measurements: 2020Ta11 - proton knockout reaction 1H(25F,23O), E=277 MeV/nucleon, cross section measured to be 81 μb 26.
DICT$ 2H(22O,P23O)=2H(22O,p23O)
DICT$ 9Be(26F,2N22O)=9Be(26F,2n22O)
DICT$ C(24O,N23O)=C(24O,n23O)
DICT$ 12C(24F,P23O)=12C(24F,p23O)
Q-value: Q(β-n)=3.76×103~12 (2017Wa10)
Q-value: S(2n)=9.58×103 12, S(2p)=45.6×103 6 sys (2017Wa10).