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

¹⁰He has not been observed. It has been searched for in the spontaneous fission of ²⁵²Cf (1982AL33), in the fragmentation of 0.79 GeV/A ¹¹Li ions (1987KO1Y) and in the fragmentation of a 30 MeV/A ¹⁸O beam (1988ST06). The production rate in the latter experiment is < 3 × 10^-5 of the measured production probability of ⁸He (1988ST06). See also (1984AJ01). The calculated value of the atomic mass excess of ¹⁰He is 48.92 ± 0.14 MeV: ¹⁰He is then unstable with respect to breakup into ⁹He + n and ⁸He + 2n by 0.04 and 1.18 MeV, respectively (1988BRZZ). See also (1984BE1C), (1979AJ01, 1984AJ01, 1987FL1A, 1987HA1R, 1987PE1C, 1987SE05) and (1983ANZQ, 1983PO1A, 1984VA06, 1985PO10, 1985SA32, 1986SA30, 1987BL18, 1987SA15; theor.).