Information on mass chains and nuclides

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GENERAL: See also (1981AJ01) and Table 13.20 [Table of Energy Levels] (in PDF or PS).

(1982NG01, 1983ANZQ, 1983AU1B, 1983FR1A, 1983OL1A).

Mass of ¹³O: We adopt the 1984 Wapstra atomic mass excess of 23111 ± 10 keV. ¹³O is then bound with respect to ¹²N + p and ¹¹C + 2p by 1.516 and 2.117 MeV, respectively. See also (1981AJ01).

1. 13O(β+)13N

Qm = 17.765

The half-life of ¹³O is 8.90 ± 0.20 msec. ¹³O decays to a number of states of ¹³N some of which subsequently decay to ¹²C*(0, 4.4): see Table 13.21 (in PDF or PS) (1970ES03). See also (1981AJ01) and (1981KO27; theor.).

2. 12C(p, π-)13O

Qm = -155.389

At E_p = 613 MeV the ground state of ¹³O and an excited state at E_x = 2.82 ± 0.24 MeV are observed in addition to unresolved structures (1978CO15). [See Fig. 4, Isobar Diagram for analog region in ¹³B.] The angular distribution of the π^- to ¹³O_g.s. has been measured at E_p = 200 MeV (1980HO20), as has A_y at E_{pol. p} = 205 MeV (1982JA05). See also (1981AU1C, 1982GR1K, 1982HO1C, 1982WA1G, 1984JA1F) and (1981CO1M; theor.).

3. 13C(π+, π-)13O

Qm = -19.986

At E_π⁺ = 164 MeV excited states are reported at E_x = 2.75 ± 0.04 and 4.21 MeV, as is a broad [Γ = 1.2 MeV] structure corresponding to one or more states at E_x = 6.02 ± 0.08 MeV. At E_π⁺ = 292 MeV these states are not observed. Angular distributions have been studied at E_π⁺ = 164 and 292 MeV to ¹³O_g.s. and at 164 MeV to ¹³O*(4.21) (1984SE15). See also (1980BU15).

4. 16O(3He, 6He)13O

Qm = -30.509

See (1981AJ01).