Information on mass chains and nuclides available on this website:

WWW TUNL

GENERAL: (See also (79AJ01) for other references in this category and for some reactions on which no new work has been done.) and Table 9.12 [Table of Energy Levels] (in PDF or PS) here.

Model calculations: (LA79G).

Complex reactions involving ⁹C: (MO81N).

Reactions involing pions: (AS79, NA79H, BU80B, HU83C).

Other topics: (BE79A, LA79G, NG82).

Mass of ⁹C: The recent Q₀ value for the ¹²C(³He, ⁶He)⁹C reaction (see reaction 3) has not been published. We therefore adopt the Wapstra mass excess: 28913.1 ± 2.5 keV.

1. 9C(β+)9B --> 8Be + p	Qm = 16.682
--> 5Li + α	Qm = 14.81

The half-life of ⁹C is 126.5 ± 0.9 msec: see (74AJ01). Several groups of delayed protons are observed indicating the involvement of a number of ⁹B states: see Table 9.10 (in PDF or PS) (ES72). See also (RA78F).

2. 9Be(π+, π-)9C

Qm = -3.959

⁹C_g.s. has been observed at E_π⁺ = 180 MeV (BU80B). See also (NA79H).

3. 12C(3He, 6He)9C	Qm = -31.574
	Q0 = -31.5762 ± 0.0032: see (KA80F).

At E(³He) = 74.1 MeV a ⁶He group is observed to the first excited state of ⁹C (BE74M). Based on Q_m, E_x = 2218 ± 11 keV and Γ = 100 ± 20 keV.