Multiphoton ionization of CF3I clusters by ultraviolet laser radiation

Disintegration of Ar N , Kr N , and (N2) N clusters during collisions with highly vibrationally excited SF6 molecules

“…3b for the same laser radiation lines and were obtained in experiments on Ar N clusters have a radically another character. At a low excitation energy density, energy E res is almost zero for all lines under study, and E res increases sharply with the excitation energy density at an energy density Φ ≥ 0.2 J/cm 2 for line 10P (18), Φ ≥ 0.4 J/cm 2 for line 10P (22), and Φ ≥ 0.7 J/cm 2 for line 10P (14). In essence, we observe a threshold character of the E res (Φ) dependence.…”

“…The processes of interaction of high energy cluster and ion beams with a surface are of particular interest in this field [13][14][15][16][17][18][19]. Cluster beams are also employed to study the extreme processes induced by the collisions of clusters with a surface [13][14][15], the photodissociation of clusters [20], and intercluster reactions [21][22][23]. The possibil ity of doping clusters by molecules (or atoms) due to the trapping of molecules by clusters from an inter secting molecular beam or during the passage of a cluster beam through a cell with a molecular gas signif icantly widens the filed of application of molecular and cluster beams [24,25].…”

“…Effect of exciting laser radiation energy density Φ on (a) energy E ab absorbed by SF 6 molecules in a beam and (b) energy E res retained in SF 6 molecules after cluster disintegration for CO 2 laser generation lines 10P(18), 10P(22), and 10P(14). The experimental conditions are identical to those forFig.…”

IR laser fragmentation of homogeneous (CF3I)nclusters and (CF3I)nclusters located inside of (Xe)mlarge clusters or on their surface

“…At present, molecular and cluster beams [1,2] have been widely used in the scientific research of chemical reactions, including the fragmentation of molecules and clusters, adsorption and desorption processes and other surface physicochemical processes, as well as for the deposition of micro-and nanostructures, obtaining thin films and new materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Among many other applications of clusters and cluster beams are studies on the excitation of noble gas clusters by high-intensity IR laser pulses with the goal of generating high-order harmonics, obtaining x-ray radiation, neutrons and electrons, initiating nuclear reactions, and enhancing high-frequency waves (see [15] and references therein).…”

“…We have detected that these three types of (CF I) n as well as their fragmentation. These processes occur upon resonant excitation of molecular clusters by intense IR laser pulses [5][6][7][8][9][10][11]. Interest in these investigations is caused by the fact that, upon laser excitation of molecules in clusters, conditions can be realized that are difficult if not impossible to realize in a gas or in a macroscopic condensed medium.…”