TY - JOUR
T1 - Driving high threshold chemical reactions during the compression interlude in cluster surface impact
AU - Gross, A.
AU - Kornweitz, H.
AU - Raz, T.
AU - Levine, R. D.
PY - 2002/3/18
Y1 - 2002/3/18
N2 - Molecular-dynamics simulations of a cluster impacting a hard surface show that, initially, the cluster is rapidly compressed and translationally heated. During this short but distinct stage, the cluster is a suitable medium for chemistry: the number of layers of the cluster is not changing; the constituents of the cluster can collide several times and both bimolecular and collisionally driven unimolecular reactions can occur. Hypersonic velocities of impact are needed for a considerable temperature rise. Following compression, the cluster fragments by expanding into a hemispheroidal plume. For supersonic impact, the cluster expands nearer to the surface forming an oblate, omelet-like, hemispheroid.
AB - Molecular-dynamics simulations of a cluster impacting a hard surface show that, initially, the cluster is rapidly compressed and translationally heated. During this short but distinct stage, the cluster is a suitable medium for chemistry: the number of layers of the cluster is not changing; the constituents of the cluster can collide several times and both bimolecular and collisionally driven unimolecular reactions can occur. Hypersonic velocities of impact are needed for a considerable temperature rise. Following compression, the cluster fragments by expanding into a hemispheroidal plume. For supersonic impact, the cluster expands nearer to the surface forming an oblate, omelet-like, hemispheroid.
UR - http://www.scopus.com/inward/record.url?scp=0037128340&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(02)00150-1
DO - 10.1016/S0009-2614(02)00150-1
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AN - SCOPUS:0037128340
SN - 0009-2614
VL - 354
SP - 395
EP - 402
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -