2011/12/09 by S. Pilling, Pilling, Sergio, D. P. P. Andrade +1
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Astrophysics and Star Formation Studies #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Mass Spectrometry Techniques and Applications
paper · pdf · doi:10.48550/arxiv.1112.1991
openalex publication_date 2011/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The presence of soft x-rays is very important for the chemical evolution of interstellar medium and other astrophysical environments close to young and bright stars. Soft X-rays can penetrate deep in molecular clouds and protostellar disks and trigger chemistry in regions in which UV stellar photons do not reach. The effects of soft X-rays in astrophysical ices are also remarkable because they release secondary electrons in and on the surface of the ices, which trigger a new set or chemical reactions. In this chapter we will discuss firstly about the origin and relevance of soft X-rays in astrophysics. Next we will move to the effect of ionizing radiation in organic molecules present in astrophysical environment. We will discuss the use soft X-rays in astrochemistry laboratory studies at both gas- and solid-phase (ice). We will make a review covering our publications in this field, in particular, about the experiments employing time-of-flight spectroscopy (TOF-MS), Fourier transform infrared (FTIR) spectroscopy and photon stimulated ion desorption (PSID-TOF-MS). This study help us to understand the chemical evolution several astrophysical regions and also put constrains in the researches related with the life's origin.