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

GENERAL: See (1983AJ01) and Table 20.1 [Table of Energy Levels] (in PDF or PS).

Model calculations:(1978WI1B, 1982SH30, 1984CH1V, 1984HA14, 1984RA13, 1984SA37, 1985HA15, 1985HU08, 1985LE1L, 1986COZZ, 1986HE13, 1986HU1G, 1986VO07, 1986WA1R, 1987IA1B).

Complex reactions involving ²⁰O:(1983FR1A, 1983WI1A, 1984HI1A, 1985HA1N, 1985PO11, 1986HA1B, 1986IR01, 1986PO06, 1986PO15, 1987RI03).

Other topics:(1978WI1B, 1983SH32, 1984PO11, 1984SA37, 1985AN28, 1985MU10, 1986AN07).

Ground state of ²⁰O:(1978WI1B, 1983ANZQ, 1984FR13, 1987SA15).

Mass of ²⁰O:From the Q-value of the ¹⁸O(t, p)²⁰O reaction the atomic mass excess of ²⁰O is stated to be 3796.3 ± 1 keV (1985AN17). See also (1982AN12, 1985WA02, 1986GU1D).

For B(E2) of ²⁰O*(1.67) and other parameters see (1987RA01) and Table 2 of the Introduction in this publication.

1. 20O(β-)20F

Qm = 3.814

²⁰O decays with a half-life of 13.51 ± 0.05 sec to the 1⁺ states ²⁰F*(1.06, 3.49) with branching ratios (99.973 ± 0.003) and (0.027 ± 0.003)%, log f₀t = 3.740 ± 0.006 and 3.65 ± 0.06, respectively (1987AL06). Upper limits for branching to other states of ²⁰F are shown in Table II of (1987AL06). See also (1985BR29).

2. 18O(t, p)20O	Qm = 3.082
	Q0 = 3082.4 ± 1.3 keV (1985AN17). See also (1982AN12).

Observed proton groups are displayed in Tables 20.2 (in PDF or PS) of (1983AJ01) and 20.1 (in PDF or PS) here. ²⁰O*(4.07) decays to ²⁰O*(0, 1.67) with branchings of (26 ± 4) and (74 ± 4)%. The p-γ angular correlations lead to J = 2; the strength of the transition favors π = +[δ(E2/M1) = -0.18 ± 0.08 for the 2⁺ → 2⁺ transition]. ²⁰O*(4.46) and ²⁰O*(5.39) decay primarily via ²⁰O*(1.67); the direct ground-state decay is < 4% for the first and < 7% for the second of these states. The angular correlations are essentially isotropic, favoring J^π = 0⁺. The transition ²⁰O*(5.39 → 4.07) is not observed: the upper limit is 8%. See also (1978AJ03, 1983AJ01). For a discussion of A = 20 isobaric states see (1982AN12, 1985AN17).

3. 18O(α, 2p)20O

Qm = -16.732

See (1983AJ01).

4. 18O(18O, 16O)20O

Qm = -0.624

See (1983AJ01).