Information on mass chains and nuclides

3	4
5	6
7	8
9	10
11	12
13	14
15	16
17	18
19	20
Group Info
Publications
HTML
General Tables
Level Diagrams
Tables of EL's
NSR Key# Retrieval
ENSDF
Excitation Functions
Thermal N Capt.
G.S. Decays
Half-Lives Table
TUNL Dissertations
NuDat at BNL
Useful Links
Citation Examples
Home
Sitemap
Directory
Email Us

WWW TUNL

¹⁸B has not been observed in the bombardment of Ta by 44 MeV/A Ar ions (1985DE60, 1985LA03, 1986PO13) or in the bombardment of Be by 12 MeV/A ⁵⁶Fe ions (1984MU27). ¹⁸B has been predicted to have a mass excess of 52.3 MeV (1993AU05). It would then be unstable with respect to ¹⁷B + n by 0.5 MeV: see (1978AJ03, 1985WA02). ¹⁸B is calculated to have J^π = 4^- and to have excited states at 0.62, 0.86 and 1.59 MeV with J^π = 1^-, 2^- and 2^- (1985PO10).The shell model calculations of (1992WA22) predict J^π = 2^- for the ground state with the first three excited states at 0.45, 0.52, 0.839 MeV with J^π = 4^-, 2^-, 3^-. See also (1987AJ02, 1988GUZT).