Dipole-bound negative ions: Collisional destruction and blackbody-radiation-induced photodetachment

摘要: The lifetimes and collisional destruction of dipole-bound negative ions formed by electron transfer in collisions between K(np) Rydberg atoms acetonitrile, deuterated acrylonitrile, dimethylsulfoxide, pyridazine are studied using a Penning ion trap. data show that the rate constants for these rotational energy with residual target gas present trap large, ∼10−7 cm3 s−1, consistent behavior to be expected weakly bound species. Ion decay is characterized single exponential. When corrected collision-induced destruction, observed rates correspond lie range ∼60 100 μs. These relatively short attributed photodetachment induced background thermal blackbody radiation.The radiation.