Short-lived isomers in 211Rn and 210Rn

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Poletti, A. R.
Dracoulis, G. D.
Poletti, S. J.
Byrne, A. P.
Stuchbery, A. E.
Gerl, J.

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The following mean lives of excited states in 211Rn and 210Rn have been measured: 211Rn: 8169 + Δ' keV, (τ = 3.3(3) ns), 7400 + Δ' keV (2,1(5) ns), 6101 + Δ' (41(2) ns), 5247 + Δ keV (5(2) ns), 3244 + Δ keV (3.9(8) ns), 2651 + Δ keV (9.6(4) ns); 210Rn: 8555 + Δ keV (2.6(3) ns), 4994 + Δ keV (19(1) ns), 1665 keV (15.0(15) ns). Some theoretical implications of these measurements for the structure of 211Rn and 210Rn are discussed.

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Nuclear Physics, Section A

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