ADOPTED LEVELS for 69Kr
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 207, 1 (2026) | Cutoff date: 1-Apr-2023
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 14590 keV SY | S(p)= 640 keV SY | Q(α)= -1550 keV SY | |||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (5/2-) | 27.9 ms 10 % β+p = 95.5 +35-62 % ε = 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
Dataset prepared by F. Kondev (ANL) and C.d. Nesaraja (ORNL)
2020Gi02,2017GoZT: 69Kr was produced in the fragmentation of a 350 MeV/u 78Kr beam incident on a Be target at the RIBF, RIKEN facility. The reaction products were selected by the the BigRIPS and ZDS separators and were implanted onto the WAS3ABi device consisting of 3 double-sided silicon strip detectors (DSSD). It was used to detect signals from the implanted ions and the charged particles emitted during their decay. The device was surrounded by the EURICA array of germanium detectors for γ-ray detection. Measured: E(p), Eγ, implant-p(t) coin, implant-p-γ(t) coin. Deduced: T1/2, %βp branching ratio
2014De41: 69Kr was produced in the fragmentation of a 70 MeV/u 78Kr beam incident on a Be target at the NSCL, MSU facility. Reaction products were selected by the A1900 separator and implanted onto double-sided silicon strip detector (DSSD) at the NSCL Beta Counting System (BCS) for subsequent β and proton detections. BCS was surrounded by the 16 Segmented Germanium Array (SeGA) for detection of prompt and delayed gamma rays. Three PIN detectors were used to measure beam loss for particle identification. Measured E(p), Eγ, implant-p(t) coin, implant-p-γ(t) coin. Deduced: T1/2, Jπ, decay scheme
2011Ro47: 69Kr was produced in the fragmentation of a 70 MeV/u 78Kr beam on a natural Ni target at GANIL. The reaction products were selected by the LISE3 separator and identified event-by-event using the time-of-flight and energy loss. They were implanted onto a double-sided silicon strip detector (DSSD) for subsequent β and proton detections correlated with β delayed protons were performed. An array of four high-purity germanium clovers surrounded the DSDD for γ-ray detection. Measured: E(p), Eγ, implant-p(t) coin, implant-p-γ(t) coin. Deduced: T1/2, Jπ, decay scheme. Other (same collaboration): 2014Ro14
1997Xu01: 69Kr was produced by the 40Ca(32S,3n) reaction using a E(32S)=170 MeV beam incident on a natural calcium target. Measured: T1/2 and delayed proton emission by the pulsed-beam technique using ΔE-E telescope and Si(Au) surface barrier detectors
1995Bl06: 69Kr was identified in the fragmentation of a 73 MeV/u 78Kr beam incident on a Ni target at GANIL. The reaction products were selected by the LISE3 separator and identified event-by-event using the time-of-flight and energy loss. They were implanted on Si detectors surrounded by four germanium detectors.
Q-value: ΔS(n)=580, ΔS(p)=400, ΔQ(α)=420 (syst,2021Wa16)
Q-value: S(2n)=32730 520, S(2p)=140 310, Q(εp)=14760 300 (syst,2021Wa16)