TY - JOUR
T1 - Enhanced Charging and Mobilization of Photoemitting Dust Particles in a Low-Density Plasma
AU - Richmond, Josef L.
AU - Pagán Muñoz, José H.
AU - Wang, Xu
AU - Horányi, Mihály
AU - Machacek, Joshua R.
AU - Charles, Christine
AU - Boswell, Roderick W.
N1 -
© 2024. The Author(s).
PY - 2025/1/16
Y1 - 2025/1/16
N2 - We present the first observations of dust charging and mobilization in a combined vacuum ultraviolet (VUV) and plasma environment. It is experimentally demonstrated that exposing photoemitting dust particles to a low-density plasma enhanced the charge on the particles, accompanied by a significant increase in dust mobilization compared to VUV or plasma exposure alone. Measurements of the dust charge support a proposed ‘charge pumping’ mechanism, in which ambient electrons are collected by photoemitting dust surfaces, causing more photoelectrons to be pumped onto surrounding dust particles, increasing repulsive forces and leading to enhanced mobilization.
AB - We present the first observations of dust charging and mobilization in a combined vacuum ultraviolet (VUV) and plasma environment. It is experimentally demonstrated that exposing photoemitting dust particles to a low-density plasma enhanced the charge on the particles, accompanied by a significant increase in dust mobilization compared to VUV or plasma exposure alone. Measurements of the dust charge support a proposed ‘charge pumping’ mechanism, in which ambient electrons are collected by photoemitting dust surfaces, causing more photoelectrons to be pumped onto surrounding dust particles, increasing repulsive forces and leading to enhanced mobilization.
UR - http://www.scopus.com/inward/record.url?scp=85213046655&partnerID=8YFLogxK
U2 - 10.1029/2024GL113715
DO - 10.1029/2024GL113715
M3 - Article
AN - SCOPUS:85213046655
SN - 0094-8276
VL - 52
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 1
M1 - e2024GL113715
ER -