ADOPTED LEVELS:UNOBSERVED for 53Cu
Authors: B. Singh and A. Chakraborty | Citation: ENSDF | Cutoff date: 11-JUN-2013
Author: Huo Junde | Citation: Nucl. Data Sheets 110,2689 (2009) | Cutoff date: 31-Mar-2007
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 19360 keV SY | S(p)= -1830 keV SY | Q(α)= -6450 keV SY | |||
| Reference: 2012WA38 |
| E(level) (keV) | T1/2(level) |
| 0? | < 130 ns % p = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | < 130 ns % p = ? | No experimental events due to 53Cu were observed. Estimated production σ=1×10-10 b in Ni(58Ni,X),E=74.5 MeV/nucleon, which is consistent with non-observation of events related to 53Cu nuclide. If this nuclide were bound, 2013Bl04 estimate that about 1250 events should have been detected in the above reaction. E(level): No experimental events due to 53Cu were observed. Estimated production σ=1×10-10 b in Ni(58Ni,X),E=74.5 MeV/nucleon, which is consistent with non-observation of events related to 53Cu nuclide. If this nuclide were bound, 2013Bl04 estimate that about 1250 events should have been detected in the above reaction. |
2013Bl04: 53Cu described as proton unbound nucleus from an analysis of results of their experiment carried out at GANIL and reported in 2005Bl15. Based on this analysis, S(p) and upper limit of half-life are deduced
In previous Nuclear Data Sheets evaluation (2009Hu15) and NUBASE-2012 (2012Au07), 53Cu is listed as identified based on a statement in 1994BlZW "in another measurement, the isotopes 53,54Cu and 49Co have been found to be unbound ". However, in a follow-up 1994Bl10 publication, authors did not discuss this nuclide. On enquiry by one of the current evaluators, 2013Bl04 stated that nothing could be said about the 53Cu nuclide in their 1994Bl10 paper. Instead, 2013Bl04 reanalyzed their 2005Bl15 experiment to set a limit on half-life and cross section, and published 2013Bl04 paper.
Q-value: Estimated uncertainties (2012Wa38): 1130 for S(n), 1060 for S(p) and Q(α)
Q-value: S(2p)=1590 800, Q(εp)=16990 800 (syst,2012Wa38). S(2n)=36.37 MeV (calculated,1997Mo25). Mass excess=-14350 800 (syst,2012Au07)