ABSTRACT The radiative cooling rates of C$_N^+$ clusters (N = 9, 11, 12, 17–27) have been measured in the ultrahigh vacuum an electrostatic storage ring to values on order 104 s?1. were as a competing channel unimolecular decay, and rate constants pertain excitation energies where these two channels compete. Such high can only be explained photon emission from thermally excited electronic state...

We present results from direct measurements of the $^{27}{\rm Al}(\alpha,n)$ thick target yield laboratory incident energies $E_{\alpha}\approx$ 3$-$5~MeV, performed with $^{3}$HeBF$_{3}$ Giant Barrel (HeBGB) neutron detector at Edwards Accelerator Laboratory. Our have a small energy cadence in order to address discrepancies and sparseness thick-target data sets existing for this region. find g...