Accurate potential surfaces for the ground state of H+C2 reaction

An accurate ground state potential surface for the scattering reaction F− + F2(v,j) → F2(v′,j′) + F−

“…The higher level basis set, the augmented correlation consistent polarized valence quadruplet-zeta (aug-cc-pVQZ), was employed as implemented in the MOLPRO 2012 package. 10 As with our previous works, 12,13 Jacobi coordinates (R, r, q) were used to characterize this three-body system, in which R indicates the distance of the uorine anion (F À ) from the center of mass of the two uorine atoms, r is the distance of the two uorine atoms, and q represents the angle between the two vectors R and r. The singlet state of the F 3 À congurations was sampled over a broad range, i.e. r distances from 0.4Å to 5.0Å, R from 0.0Å to 20.0Å, and q from 0.0 to 90.0 .…”

“…The r value of this reaction barrier is nearly equal to 2.2Å. This characteristic is different from the HCC, 12 LiHH, 13 and OCC 14 systems which were investigated in our previous studies. To easily understand the relationship of the PES with different angles, the lowest potential energy surface is plotted in Fig.…”

Passive Q-switching of ∼2.7 µm Er:Lu2O3ceramic laser with a semiconductor saturable absorber mirror

“…A continue-wave (CW) output power of ∼26 W was produced from an Er:Y 2 O 3 ceramic laser at liquid nitrogen temperature. 19 20,21) Stable pulses with ∼41 ns duration and ∼0.3 mJ energy were realized from an acoustooptically Q-switched Er:Y 2 O 3 ceramic laser at RT, which turn out to offer the highest peak power and the shortest pulse width achieved from diode-pumped Q-switched lasers at ∼2.7 µm. 22) The superiority of sesquioxides in Q-switched operation arises from their great energy storage capacity.…”

Three Dimensional Potential Energy Surface For The F3

“…The total number of contracted configurations is 595861, which include the number of internal configurations, singly external configurations, and doubly external configurations are 251, 430002, and 5528358, respectively. Jacobi coordinate (r, R, θ), which can express the three dimensional PESs well in our previous works on triatomic systems [3,[19][20][21][22][23], is used in the present work. r is used to show the distance between two fluorine atoms, R demonstrates the distance from the reduced mass of the two fluorine atoms to the third fluorine atom, and the angle between these two vectors is presented by θ (see figure 1).…”