Gas Phase Ions in Protoplanetary Disks from Collisions of Solids
arXiv:2402.01405 · doi:10.1093/mnrasl/slae004
Abstract
Ionization is important for magnetohydrodynamics and chemistry in protoplanetary disks but known ionization sources are often weak along the midplane. We present, for the first time, data from a laboratory experiment, where we measure ions from colliding mm-basalt grains emitted into the surrounding gas phase. This positive detection implies that very basic collisions in early phases of planet formation are sources of ionization. The midplane of protoplanetary disks might be ionized despite the lack of intense radiation sources.
References in corpus (14)
- Closed-form expressions for particle relative velocities induced by turbulence
- Sticking Properties of Silicates in Planetesimal Formation Revisited
- Understanding planet formation using microgravity experiments
- Formation of intermediate-mass planets via magnetically-controlled disk fragmentation
- Evolution of the Water Snow Line in Magnetically Accreting Protoplanetary Disks
- Failed Growth at the Bouncing Barrier in Planetesimal Formation
- A challenge for Martian lightning: Limits of collisional charging at low pressure
- Size Dependence of the Bouncing Barrier in Protoplanetary Dust Growth
- Harvesting the decay energy of Al to drive lightning discharge in protoplanetary discs
- On the Vertical Shear Instability in Magnetized Protoplanetary Disks
- Impact of magneto-rotational instability on grain growth in protoplanetary disks: II. Increased grain collisional velocities
- The impact of dust evolution on the dead zone outer edge in magnetized protoplanetary disks
- Violation of triboelectric charge conservation on colliding particles
- Ionizing Protoplanetary Disks in Pebble Collisions