2011Ro18: ⁶⁹Br produced at the Coupled Cyclotron Facility of the National Superconducting Cyclotron Laboratory (NSCL) by a secondary beam consisting of ⁶⁹As (23.9%), ⁷⁰Se (66.7%) and ⁷¹Br (9.4%) (produced in fragmentation of ⁷⁸Kr beam at E=140 MeV/nucleon with a ⁹Be target) impinging on a polypropylene reaction target. Emitted protons were detected by the High Resolution Array (HIRA) with sixteen ΔE-E telescopes, each configured with a double-sided silicon strip detector and backed by four CsI(Tl) crystals. Heavy projectile-like residues were detected in the focal plane of the S800 spectrograph, then identified by energy loss and time of flight. Measured protons in coincidence with ⁶⁸,⁶⁹Se and ⁶⁷,⁶⁸As, ΔE, ToF, Q(β^-)value. Deduced proton separation energy, mass excess. Monte Carlo simulation. Implications for the astrophysical rp-process.

1996Pf01: Searched for ⁶⁹Br in the fragmentation of ⁷⁸Kr projectile with 75 MeV/u on a ⁵⁸Ni target. Estimated T_1/2 from the absence of ⁶⁹Br.

1995Bl06: Found no evidence for ⁶⁹Br in the fragmentation of ⁷⁸Kr beam at 73 MeV/u on a Ni target. Deduced that ⁶⁹Br is proton unbound by at least 450 keV to yield a T_1/2 less than about 100 ns.

1995He39: Attempt to measure the β⁺ decay half-life of ⁶⁹Br in the fragmentation of ⁷⁸Kr at 70 MeV/u on a natural Ni target was not successful because of low count rate.

1995MoZV: searched for ⁶⁹Br in the fragmentation of a 75 MeV/u ⁷⁸Kr beam incident on a ⁵⁸Ni target. No events that could be attributed to ⁶⁹Br were observed.

1991Mo10: identified ⁶⁹Br activity in the fragmentation of ⁷⁸Kr beam at 65 MeV/u on an enriched ⁵⁸Ni target. However, the authors state that it is difficult to conclude from such a small number of events whether ⁶⁹Br has been in fact identified or whether the events are due to background processes.

1990Ro15: searched for the g.s. p decays of ⁶⁹Br using the ⁴⁰Ca(³²S,p2n) reaction with E(³²S)=200 MeV. No p groups that could be assigned to ⁶⁹Br were observed. If the production cross section of ⁶⁹Br is of the order of 150 microbarns, then ⁶⁹Br must have p half-life shorter than 300 μs or longer than 30 ms.

1989Ho19: searched for p radioactivity of ⁶⁹Br using the ⁴⁰Ca(³²S,p2n) reaction. Found no p radioactivity in the energy range 250-600 keV and a T_1/2 range of 10 μs -100 ms and a production cross section lower limit of 1 microbarn.

Others: 1999Ja02, 1997Or04, 1989HoZG, 1989HoZQ, 1978BaYE, 1977JaZT

Q-value: ΔQ(β^-)=400, ΔS(n)=310 (syst,2012Wa38)

Q-value: All values except S(p) are from 2012Wa38.