ADOPTED LEVELS for 193Rn
Author: M. Shamsuzzoha Basunia | Citation: Nucl. Data Sheets 143, 1 (2017) | Cutoff date: 31-Mar-2017
Full ENSDF file | Adopted Levels (PDF version)
| S(p)= 1170 keV 40 | Q(α)= 8040 keV 12 | ||||
| Reference: 2017WA10 |
| E(level) (keV) | T1/2(level) |
| 0.0 | 1.15 ms 27 % α ≈ 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 1.15 ms 27 % α ≈ 100 | From systematics of decays of odd-A Rn isotopes, the decay pattern of 193Rn is found to be different from higher mass Rn isotopes, which, according to 2006An36, suggests a possible prolate deformed shape for this nucleus. E(level): From systematics of decays of odd-A Rn isotopes, the decay pattern of 193Rn is found to be different from higher mass Rn isotopes, which, according to 2006An36, suggests a possible prolate deformed shape for this nucleus. |
First identification of 193Rn nuclide by 2006An36.
193Rn produced and identified in 144Sm(52Cr,3n) reaction at E=252 MeV; 144SmF3 rotating target onto a carbon backing. UNILAC heavy-ion facility at GSI, with SHIP velocity filter for separating evaporation residues.
Detector system: Several different types of detectors were used: The decays of the evaporation residues were measured by implanting residues in a thick 16-strip position-sensitive silicon detector (PSSD) with a typical FWHM ≈ 20 keV for α particles in 6-8 MeV range. An array of six silicon detectors of similar shape (BOX detectors), mounted upstream of PSSD detector, was used to measure the energies of α, β and conversion electrons. Three thin time-of-flight detectors in front of the PSSD and BOX detectors permitted identification of reaction products from the scattered beam particles; and distinction between the decay events and implantation events through anti-coincidence technique. An additional thick Si detector was installed as a veto detector behind the PSSD detector in an anti-coincidence mode. This allowed distinction between the decays and the punch-through events (from high-energy protons and α particles produced in the reactions on the carbon backing). For γ rays, a four-fold segmented ’Clover’ Ge detector was used behind the PSSD detectors for prompt and delayed γ(residues) coin and/or αγ coin measurements.
Measured α, γ, αγ coin, α(residues) coin, γ(residues) coin. Results are also discussed in 2007An19.
Q-value: S(n)=9060 (1997Mo25 - calculated value).