TY - JOUR
T1 - Main species and physicochemical processes in cold atmospheric-pressure He + O2 Plasmas
AU - Liu, Ding Xin
AU - Rong, Ming Zhe
AU - Wang, Xiao Hua
AU - Iza, Felipe
AU - Kong, Michael G.
AU - Bruggeman, Peter
PY - 2010/10/14
Y1 - 2010/10/14
N2 - The main species and chemical processes in low-temperature atmospheric-pressure He + O2 plasmas are identified using a comprehensive global model. The simulation results highlight the significance of Penning processes at low oxygen concentration, and the increasingly important role of electron attachment as the oxygen concentration increases. With increasing the oxygen concentration, the electron energy dissipation shifts from elastic collisions with He to dissociative excitation and attachment of O 2 molecules, and large ions (O+3, O +4) become the dominant charged species. Generation and loss of ROS (O, O(1D), O(1S), O2(a 1δg), O2(b1σg+), O 3) relevant for biomedical applications are discussed. Cold atmospheric-pressure He+O2 plasmas are an excellent source of reactive oxygen species (e.g. O, O(1D), O(1S), O 2(a1δg), O2(b 1σg+), O3) relevant in many applications, such as plasma medicine. Here we report on a detailed analysis of the interaction among 21 species and 267 reactions involved in these plasmas and unravel the main physicochemical processes at play.
AB - The main species and chemical processes in low-temperature atmospheric-pressure He + O2 plasmas are identified using a comprehensive global model. The simulation results highlight the significance of Penning processes at low oxygen concentration, and the increasingly important role of electron attachment as the oxygen concentration increases. With increasing the oxygen concentration, the electron energy dissipation shifts from elastic collisions with He to dissociative excitation and attachment of O 2 molecules, and large ions (O+3, O +4) become the dominant charged species. Generation and loss of ROS (O, O(1D), O(1S), O2(a 1δg), O2(b1σg+), O 3) relevant for biomedical applications are discussed. Cold atmospheric-pressure He+O2 plasmas are an excellent source of reactive oxygen species (e.g. O, O(1D), O(1S), O 2(a1δg), O2(b 1σg+), O3) relevant in many applications, such as plasma medicine. Here we report on a detailed analysis of the interaction among 21 species and 267 reactions involved in these plasmas and unravel the main physicochemical processes at play.
KW - atmospheric pressure glow discharges (APGD)
KW - biomedical
KW - cold plasma
KW - modeling
KW - oxygen
UR - https://www.scopus.com/pages/publications/78149442126
U2 - 10.1002/ppap.201000049
DO - 10.1002/ppap.201000049
M3 - 文章
AN - SCOPUS:78149442126
SN - 1612-8850
VL - 7
SP - 846
EP - 865
JO - Plasma Processes and Polymers
JF - Plasma Processes and Polymers
IS - 9-10
ER -