Information on mass chains and nuclides

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GENERAL: See also (1979AJ01) and Table 9.1 [Table of Energy Levels] (in PDF or PS).

Model calculations: (1979LA06).

Complex reactions involving ⁹Li: (1978DU1B, 1979AL22, 1979BO22, 1979JA1C, 1980BO31, 1980WI1L, 1981BO1X, 1981MO20, 1982BO40).

Muon and neutrino capture and reactions: (1980MU1B).

Reactions involving pions and other mesons (See also reaction 3.): (1978FU09, 1979BO21, 1979PE1C, 1979WI1E, 1980NI03, 1980ST15, 1981YA1A).

Hypernuclei: (1978DA1A, 1978PO1A, 1980MA1Z, 1981ST1G, 1981WA1J, 1982KO11).

Other topics: (1979BE1H, 1979LA06, 1982NG01).

Ground-state properties of ⁹Li: (1981AV02, 1982NG01).

1. 9Li(β-)9Be

Qm = 13.606

The half-life of ⁹Li is 178.3 ± 0.4 msec (1976AL02). See also (1979AJ01). ⁹Li decays to a number of states in ⁹Be: see reaction 12 in ⁹Be and Table 9.7 (in PDF or PS). The nature of the decay to ⁹Be*(0, 2.43) with J^π = 3/2^-, 5/2^- is evidence for J^π = 3/2^- for ⁹Li_g.s.. The probablility for delayed neutron decay, P_n, is (49.5 ± 5)% (1981LA11): see Table 9.7 (in PDF or PS).

2. 7Li(t, p)9Li

Qm = -2.386

Protons are observed to excited states at E_x = 2.691 ± 0.005 MeV (1964MI04), 4.31 ± 0.03, 5.38 ± 0.06 and 6.41 ± 0.02 MeV (1971YO04) [Γ_c.m. = 250 ± 30, 600 ± 100, < 100 keV], 4.31 ± 0.02 and 6.435 ± 0.020 MeV (1978AJ02) [Γ_c.m. = 100 ± 30, 40 ± 20 keV]. Angular distributions are reported at E_t = 11.3 (1964MI04; t₀), 15 MeV (1971YO04: t₀, t₂, t₄) and at 23 MeV (1978AJ02: t₀, t₁, t₂, t₄). They are consistent with J^π = 3/2^-, (1/2^-) and ≥ 9/2 for ⁹Li*(0, 2.69, 6.43) (1978AJ02). See also (1979AB11, 1980AB16, 1983ABZW, 1983CO11) and ¹⁰Be.

3. 9Be(γ, π+)9Li

Qm = -153.174

At E_γ = 175, 187, 200 MeV, the cross section for production of ⁹Li_g.s. at θ_π = 90° has been measured by (1982TE01). See also (1979BO21, 1980NI03).

4. 9Be(n, p)9Li

Qm = -12.824

See (1981BR1K) and (1979AJ01).

5. 9Be(7Li, 7Be)9Li

Qm = -14.468

See (1982AL1G: E(⁷Li) = 78 MeV).

6. 11B(6Li, 8B)9Li

Qm = -25.121

At E(⁶Li) = 80 MeV the angular distribution to ⁹Li_g.s. has been measured. States at E_x = 2.59 ± 0.10, 4.36 ± 0.10 and 6.38 ± 0.12 MeV are also populated (1977WE03, 1977WE1B).