Information on mass chains and nuclides

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GENERAL: See also (1972AJ02) and Table 20.1 [Table of Energy Levels] (in PDF or PS).

Shell model: (1972LE13, 1973JU1A, 1973LA1D, 1973MA1K, 1973MC06, 1974CO40, 1975BA81).

Cluster, collective and deformed models: (1973AB01).

Electromagnetic transitions: (1976VO1C).

Special states: (1972LE13, 1972SA04, 1973JU1A, 1973MC06, 1975BA81).

Complex reactions involving ²⁰O: (1973BA81, 1973VO1G, 1973WI15, 1974BA89, 1975VO09, 1976VA29, 1977AR06).

Other topics: (1971ST40, 1972CA37, 1972SA04, 1973GR11, 1973SA24, 1973SP1A, 1974CO40, 1974HA17, 1974SE1B, 1975BA81, 1977DA10, 1977SH13).

Ground state of ²⁰O: (1973MC06, 1973SP1A, 1974CO40, 1974MC1F, 1974SHYR, 1975BE31, 1976BE1G).

1. 20O(β-)20F

Qm = 3.816

²⁰O decays to ²⁰F*(1.06) [J^π = 1⁺] with a half-life of 13.57 ± 0.1 sec (1970MA42: log ft = 3.73). See also (1972EY01). Upper limits for the branching to other states of ²⁰F are shown in Table 20.2 (in PDF or PS). See also (1972WI1C, 1973LA03, 1973WI11, 1974WI1L, 1975NA20, 1975NA21, 1977AZ02; theor.).

2. 18O(t, p)20O

Qm = 3.079

Observed proton groups are displayed in Table 20.3 (in PDF or PS) (1962HI06, 1964MI05, 1965MO19). The excitation energy of ²⁰O*(1.67) is 1673.68 ± 0.15 keV (1973WA19), 1675.0 ± 1.0 keV (1975BE15); J = 2 (1970NI03); τ_m = 14.2 ± 0.8 psec (1975BE15), 9.8 ± 0.7 psec (1977HE12, 1977HE1D); g = -0.39 ± 0.04 (1975BE15, 1976GE01). See also (1972AJ02).

3. 18O(14C, 12C)20O

Qm = -1.562

See (1972EY01).

4. 18O(16O, 14O)20O

Qm = -17.327

See (1976HI10).

5. 18O(18O, 16O)20O

Qm = -0.628

At E(¹⁸O) = 52 MeV angular distributions have been measured to four states of ²⁰O (1976KUZX; abstract). See also (1972EY01).