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USNDP

10C (1988AJ01)


(See Energy Level Diagrams for 10C)

GENERAL: See also (1984AJ01) and Table 10.18 [Table of Energy Levels] (in PDF or PS) here.

Model calculations: (1984SA37, 1987BL18).

Special states: (1986AB10).

Astrophysical questions: (1987RA1D).

Complex reactions involving 10C: (1983FR1A, 1983OL1A, 1986HA1B, 1987AR19, 1987BEYI, 1987RI03, 1987SN01, 1987TAZU, 1988BEYJ, 1988CA06, 1988KI05, 1988SA19).

Reactions involving pions and other mesons (See also reactions 2 and 4.): (1985LI1E, 1987SI18).

Other topics: (1982KA1D, 1985AN28, 1986YA1F).

Ground-state properties of 10C: (1983ANZQ, 1985AN28, 1987BL18, 1987SA15).

Mass of 10C: The threshold energy for the 10B(p, n)10C reaction is 4876.90 ± 0.37 keV: then Q0 = -4430.17 ± 0.34 keV (1984BA12). Using the (1988WA18) masses for 10B, p and n, the atomic mass excess of 10C is then 15698.8 ± 0.5keV. This value does not include a contribution from unpublished work on 12C(p, t)10C quoted in (1984AJ01). However, we adopt the (1988WA18) value: 15699.1 ± 0.3 keV.

B(E2) for 10C*(3.35) = (6.2 ± 1.0) × 10-3 e2 · b2,

[Q0 = 0.25 ± 0.02b] (1987RA01).

1. 10C(β+)10B Qm = 3.6481

10C decays with a half-life of 19.255 ± 0.053 sec to 10B*(0.7, 1.7): the branching ratios are (98.53 ± 0.02)% and (1.465 ± 0.014)%, respectively: see (1974AJ01). See also reaction 40 in 10B and (1986CA1L).

2. 7Li(3He, π-)10C Qm = -125.429

At E(3He) = 235 MeV 10C*(3.35) is populated (1984BI08). π- production in this reaction has also been studied by (1984BR22) at E(3He) = 910 MeV.

3. 7Li(7Li, 4n)10C Qm = -18.171

Tetra-neutron (n4) production has been studied in this and in other reactions involving 10C at E(7Li) = 82 MeV (1987ALZG; prelim.): it is not observed.

4. 9Be(p, π-)10C Qm = -136.631

Angular distributions of π- groups have been measured at Ep = 185 MeV (to 10C*(0, 3.35, 5.28, 6.63)), at 200 MeV (g.s.), at 800 MeV (to 10C*(0, 3.35, 5.3, 6.6)) [see (1984AJ01)] and at Epol. p = 650 MeV (1986HO23; 10C*(0, 3.35); also Ay). Ay measurements have also been reported at Ep = 200 to 250 MeV: see (1984AJ01).

5. 10B(p, n)10C Qm = -4.4305
Q0 = -4430.17 ± 0.34 keV (1984BA12)

The Ex of 10C*(3.35) = 3352.7 ± 1.5 keV, τm = 155 ± 25 fsec, Γγ = 4.25 ± 0.69 meV. Angular distributions have been measured for the n0 and n1 groups and for the neutrons to 10C*(5.2 ± 0.3) at Ep = 30 and 50 MeV [see (1974AJ01, 1979AJ01)] and for the n0 and n1 groups at Ep = 14.0, 14.3 and 14.6 MeV (1985SC08) and 15.8 and 18.6 MeV (1985GU1C; prelim.). See also (1984BA1R, 1988KA2E).

6. 10B(3He, t)10C Qm = -3.6667

Angular distributions have been measured at E(3He) = 14 MeV and 217 MeV: see (1979AJ01). The latter [to 10C*(0, 3.35, 5.6)] have been compared with microscopic calculations using a central + tensor interaction [Jπ = 0+, 2+, 2+]. Structures have been reported at Ex = 5.22 ± 0.04 [Γ = 225 ± 45 keV], 5.38 ± 0.07 [300 ± 60 keV] and 6.580 ± 0.020 MeV [190 ± 35 keV].

7. 12C(p, t)10C Qm = -23.3600

Angular distributions have been reported at Ep = 30.0 to 54.1 MeV and at 80 MeV [see (1974AJ01, 1979AJ01, 1984AJ01)]. L = 0, 2 and 2 to 10C*(0, 3.35, 5.28) thus leading to 0+, 2+ and 2+ for these states [but note that the "5.28 MeV" state is certainly unresolved]: see reaction 6 and Table 10.18 (in PDF or PS). 10C*(6.6) is also populated. Two measurements of the excitation energy of 10C*(3.4) are 3353.5 ± 1.0 keV, 3354.3 ± 1.1 keV: see (1984AJ01) [based on Qm]. See also (1987KW01; theor.).

8. 13C(3He, 6He)10C Qm = -15.235

At E(3He) = 70.3 MeV the angular distributions of the 6He ions corresponding to the population of 10C*(0, 3.35) have been measured. The group to 10C*(3.35) is much more intense than the ground-state group: see (1979AJ01).