Precision Penning-trap measurement to investigate the role of theCr51(e−,νe)

β -decay Q values among the A=50 Ti-V-Cr isobaric triplet and atomic masses of Ti<

“…as was done in the case of 113 Cd [11]. In addition we report improved values for the atomic masses of 46,47,49,50 Ti, 50,51 V, and 50,52−54 Cr. These results are important for testing the reliability of input data used in global evaluations of atomic masses i.e.…”

Precision evaluation of theGa71(νe,e−)solar neutrino capture rate from theFrekers1, Adachi2, Akimune3 et al. 2015Phys. Rev. CSelf Cite

“…A capture rate of 0.32 SNU was evaluated for excitation energies above the neutron threshold, E x > S" [17], Errors are statistical errors from the present measurements. E 122.4 (16) speccross.f written by Bahcall, which contains corrections for (i) forbidden transitions, (ii) overlap between initial and final atomic states, (iii) exchange effects among electrons, (iv) electron screening, and (v) the nuclear size [31,32], If we use the same B(GT)-strength spectrum as was used by Bahcall, we obtain results identical to those in Ref. [31], The cumulative capture rates are shown in Fig.…”

“…surem ents o f the 7iG a ( w , 0 cross section using the (3H e,/) charge-exchange reaction [14], as well as rem easurem ents o f the Q values for the 7lGa(u(,,e _ )7lGe reaction and for the 5lCr(EC , w )51 V decay, have recently been perform ed [15,16], These have ruled out incorrect nuclear physics assum ptions as the source o f the observed discrepancies.…”

Improvements to TITAN’s mass measurement and decay spectroscopy capabilities

“…TITAN's EBIT [21] was designed to charge-breed ions in preparation for their mass measurement in MPET. Since the first HCI mass measurement of 44 K 4+ [21] and the first short-lived HCI mass measurement of 74 Rb 8+ [22], TITAN has measured and published the masses of 22 exotic ground-state nuclei [8,22,23,24,25,26] and the long-lived isomeric state of 78 Rb [25]. The EBIT consists of a superconducting magnet in a Helmholtz configuration capable of generating a magnetic field of up to 6 T. An electron gun typically produces electron beam energies of 1.5-7 keV and currents as high as 500 mA 1 .…”

“…The precision requirements for each field varies from δm m ≤ 10 −7 for nuclear astrophysics to δm m ≤ 10 −10 for tests of Charge, Parity and Time (CPT) invariance. Penning traps are the tool of choice for online precision mass determinations [4] and have demonstrated the ability to quickly and precisely measure masses at a variety of different facilities with differing means of production [5,6,7,8,9]. As newer facilities as well as upgrades to older facilities are coming online and providing access to nuclei further from the valley of βstability than ever before, the need to make precise mass measurements using shorter measurement cycles than before is ever present.…”