Charge exchange measurements with neutral hydrogen using the X-ray Quantum Calorimeter (XQC)

23 Jul 2019, 17:45
1h 15m
Piazza Città di Lombardia (Milano)

Piazza Città di Lombardia

Milano

Piazza Città di Lombardia, 1, 20124 Milano MI
Poster Low Temperature Detector Applications Poster session

Speaker

Conjeepuram Ambarish (University of Wisconsin-Madison)

Description

X-ray emission from charge exchange between highly-charged ions and neutral atoms forms a significant portion of the emissions from galactic outflows and stellar winds and is an important source of soft X-ray emission in our Solar system. Theoretical modeling of the velocity-dependent partial cross sections for X-ray line emission in charge exchange has so far proven difficult. High-resolution laboratory measurements of X-ray line emissions from charge exchange over a wide range of collision velocities are needed to test and benchmark the various theoretical models currently available.
Our XQC sounding rocket detector system has been modified for efficient use as a detector on the merged beam facility at Oak Ridge National Labs (ORNL). We are using this to take high-resolution spectra of charge exchange between astrophysically relevant ions and neutral H atoms. Any ion of interest can be generated and merged with a neutral H beam with relative velocities adjustable over the entire range of astrophysical interest. We present our initial results and details of the experimental design.

Less than 5 years of experience since completion of Ph.D Y
Student (Ph.D., M.Sc. or B.Sc.) Y

Primary authors

Conjeepuram Ambarish (University of Wisconsin-Madison) Mr Nicholas Christensen (University of Wisconsin-Madison) Felix Jaeckel (University of Wisconsin - Madison) Dan McCammon (university of wisconsin) Avirup Roy (University of Wisconsin-Madison) Dr Dallas Wulf (University of Wisconsin-Madison) David Seely (Dep. of Physics, Albion College) Vola Andrianarijaona (Pacific Union College, Angwin) Charles Havener (Oak Ridge National Laboratory)

Presentation Materials