Beta delayed spectroscopy of ^27,29F: Investigating Nuclei Near the Neutron Dripline

The island of inversion around 32Mg, characterized by tensor-force-driven deformation, has been well characterized in its north and west “shores.” The south-eastern “beaches” offer intriguing physics where deformation and neutron dripline effects overlap, yet they remain poorly known due to the difficulty in producing them in experimental facilities. In particular, if standard ordering is restored at the dripline, it will suppress low-energy opposite-parity intruders.

In this talk, I will present experimental work done at the National Superconducting Laboratory as a part of the E19044 collaboration. A 48Ca beam was fragmented to produce a cocktail beam of isotopes around Z=9, N=20 29F and separated by mass using the A1900 spectrometer. The cocktail beam was implanted in a YSO crystal, and the decay products were detected using 3 HPGe clovers for gamma rays and 48 VANDLE bars for beta delayed neutrons.

This presentation will focus on beta-delayed gamma and neutron spectroscopy of 27F and 29F, including beta delayed gamma, as well as neutron and neutron gamma spectra.