After decades of searching, astronomers have recently identified specific Polycyclic Aromatic
Hydrocarbons (PAHs) in space. Remarkably, the observed abundance of cyanonaphthalene …

Predicted almost forty years ago, the radiation from thermally populated excited electronic
states has recently been recognised as an important cooling mechanism in free molecules …

Abstract Extended Red Emission (ERE) is a widely observed optical emission process,
present in a wide range of circumstellar and interstellar environments in the Milky Way …

We have detected visible photons emitted from the thermally populated electronic excited
state, namely recurrent fluorescence (RF), of C 6-stored in an electrostatic ion storage ring …

Time-resolved spontaneous and laser-induced unimolecular fragmentation of perylene
cations (C 20 H 12+) has been measured on timescales up to 2 s in a cryogenic electrostatic …

The radiative cooling rates of C clusters (N= 9, 11, 12, 17–27) have been measured in the
ultrahigh vacuum of an electrostatic storage ring to values on the order of 104 s− 1. The …

We determined absolute rate coefficients for the recurrent fluorescence (RF) process in C6–
anions at excitation energies above the adiabatic electron attachment energy of 4.18 eV …

Recurrent fluorescence (RF) from isolated carbon clusters containing between 24 and 60
atoms is theoretically investigated as a function of internal energy, cluster size, and structural …

Spontaneous and photoinduced delayed electron detachment from pentacene anions was
measured in the electrostatic ion storage ring TMU E-ring. The dissipation mechanisms of …

Radiative cooling of carbon cluster anions C 2n+ 1−(n= 3–5) is investigated using the
cryogenic electrostatic ion storage ring DESIREE. Two different strategies are applied to …