Figure 1

$\beta$-delayed $\gamma$-ray spectrum for ${}^{55}\mathrm{Ti}$ in the range $0-2\text{MeV}$. This spectrum includes events within the first second after a ${}^{55}\mathrm{Ti}$ implant. The peaks labeled by energy have been assigned as transitions following the decay of ${}^{55}\mathrm{Ti}$ unless otherwise noted.Reuse & Permissions

Figure 2

Decay curves for ${}^{55}\mathrm{Ti}$, showing (a) fragment-$\beta$ correlations only, where the data were fitted with a single-exponential decay with exponential background; (b) fragment-$\beta$ correlations with an additional requirement of a $323\text{−}\text{keV}$ $\gamma$ ray; and (c) fragment-$\beta$ correlations with an additional requirement of a $673\text{−}\text{keV}$ $\gamma$ ray. The curves shown in (b) and (c) were fitted with a single exponential with constant background.Reuse & Permissions

Figure 3

Proposed level scheme for ${}^{55}\mathrm{V}$ populated following the $\beta$ decay of ${}^{55}\mathrm{Ti}$. The number in brackets following the $\gamma$-ray decay energy is the absolute $\gamma$ intensity in percent. The $Q_{\beta }$ value was deduced from data in Ref. 14. Identified coincidence relationships are shown by the filled circles.Reuse & Permissions

Figure 4

$\gamma$ rays in coincidence with the (a) $323\text{−}\text{keV}$, (b) $673\text{−}\text{keV}$, and (c) $828\text{−}\text{keV}$ $\gamma$-ray transitions following ${}^{55}\mathrm{Ti}$ $\beta$ decay.Reuse & Permissions

Figure 5

(a) Decay curve for ${}^{56}\mathrm{Ti}$. Data were fitted with a single-exponential decay and exponential growth and decay of the short-lived daughter ${}^{56}\mathrm{V}$. An exponential background is also considered in the fit. (b) $\beta$-delayed $\gamma$-ray spectrum for ${}^{56}\mathrm{Ti}$ in the range $0-1.5\text{MeV}$. A gate was placed on the decay curve to include only events within the first second of a ${}^{56}\mathrm{Ti}$ implant. The 668- and $1006\text{−}\text{keV}$ $\gamma$ rays from decay of the daughter ${}^{56}\mathrm{V}$ dominate the spectrum. One inset shows an expanded view of the $\gamma$-ray spectrum in the region around $160\text{keV}$. The 13 counts in a single channel at $162\text{keV}$ are proposed to be a spectrum artifact. For comparison, an expansion of the region around $1006\text{keV}$ is shown in a second inset.Reuse & Permissions

Figure 6

Shell model results for the $\beta$ decay of ${}^{55}\mathrm{Ti}$. Details of the shell model calculations are given in the text. The ${}^{55}\mathrm{V}$ experimental levels and $\beta$-decay branching ratios derived in the present work are shown to the right.Reuse & Permissions