The gas phase vibrational spectrum of CH3CNH+ is investigated using a messenger infrared predissociation (IRPD) action spectroscopic method. Vibrational bands were recorded in the 300-1700 cm−1 and 2000-3300 regions making use widely tunable free electron laser for experiments, FELIX, coupled to cryogenic ion trap instrument. Band assignments aided by high-level quantum-chemical calculations, w...

Abstract This study aims to find out the misconceptions experienced by college students in Astronomy material using four-tier Diagnostic test through google form. The population of this were all 5th semester Sriwijaya University Physics Education Study Program. research is a quantitative descriptive research. Descriptive here intended identify physics diagnostic test. Quantitative obtain data f...