Shape coexistence in $^{74}$Rb explored via 2$_{1}^{+}$ state lifetime measurement

The self-conjugate nucleus $^{74}$Rb lies in a region of the nuclear chart which is well-known to harbor many intriguing nuclear structure phenomena. The nature of the collectivity in this region changes rapidly, with E2 strengths known to show sudden increases with a small increase in mass along the N$=$Z line. Shape coexistence is also a well-known feature of this mass region, especially in the Kr isotopes. Shape coexistence therefore may also persist in $^{74}$Rb, with N $=$ Z $=$ 37, as it does in the isobaric analogue states of $^{74}$Kr. To investigate these phenomena, the lifetime of the first 2$^{+}$ state in $^{74}$Rb has been measured using the NSCL TRIPLEX plunger and GRETINA. Results of the measurement will be presented and the implications for the structure of $^{74}$Rb will be discussed.