Effect of laser field ellipticity on the rovibrational excitations of a diatomic molecule

Prasad, Vinod; Yamashita, Koichi

doi:10.1016/j.cplett.2006.04.120

Cited by 6 publications

(6 citation statements)

References 22 publications

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“…The above equations can be solved numerically for the time-dependent coefficients i for a particular set of initial condition, using the standard diagonalization technique used by [25][26][27][28], the coupled Equation 18, can be solved at …”

Section: Methodsmentioning

confidence: 99%

l-Mixing Collision in Presence of Microwave Field

Arya¹,

Dahiya²,

Prasad³

2012

JMP

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We have studied excitation of multilevel Na-Rydberg atom due to collision with proton in the presence of variable laser field. The interaction of laser field and Na-Rydberg atom is explored using non perturbative Floquet technique. The transition probability is calculated at different laser frequencies (GHz), projectile velocities and impact-parameter. We have also calculated total cross-section for near resonant energy transfer collision of proton with Na-Rydberg atom at different frequencies

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Section: Methodsmentioning

confidence: 99%

l-Mixing Collision in Presence of Microwave Field

Arya¹,

Dahiya²,

Prasad³

2012

JMP

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“…Also, the ability to excite the special target level of the chosen particle permits potential applications of laser-induced collisional energy transfer (LICET) [9,10,35] in controlling pathways of chemical reactions, thus making a detailed understanding of atomic dynamical processes possible. In addition, in case of laser-assisted collisions due to ion-molecule interaction, the laser acts as an external control parameter for the reaction mechanism [2], for example by changing the ellipticity of the polarised laser field.…”

Section: Discussionmentioning

confidence: 99%

“…(14) using fourth-order Runge-Kutta method [30][31][32] with the initial condition taken as molecule being in the ground rotational J = M = 0 state at t = 0 state. This method is quite suitable in obtaining rotational probabilities as their is no dressing by the continuous laser field (which require alternate methods like quasi-energy technique as used by other groups [2][3][4]). In fact, we have applied a laser pulse of short duration.…”

Section: Theoretical Approachmentioning

confidence: 99%

“…(A) Electron-impact processes: The inelastic electron impact processes of an atom A, in a quantum state characterised by principal and angular momentum quantum numbers n and l, include e + A(nl) → e + A(n l ), n = n ≥ 1 (excitation), (2) e + A(nl) → e + A + + e, n ≥ 1 (ionization), (3)…”

Section: Introductionmentioning

confidence: 99%

“…The laser-induced collisions leading to energy transfer is an optical process where the laser field is applied during the collision between the two particles which could be the combination of ion with atoms or molecules [1][2][3][4][5][6][7][8], atom with atom [9][10][11] etc. The laser-induced collision was proposed in the 1970s [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Rotational Excitation of Diatomic Molecule: Time Dependent Study

2018

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Recent experimental evidences have prompted us to study the dynamics of laser-assisted rotational excitation of a diatomic molecule due to an ion impact. The collision time between the ion and the molecule is very small (few atomic units) and the laser pulses considered are of picosecond range. We study the evolution of the rotational probabilities by varying the various laser parameters (pulse shape, field strength, pulse width, frequency) and collision parameters (impact parameter b, collisional velocity v). It is found that the probabilities of the rotational states depend strongly on the laser pulse parameters and the collision parameters. The study is more emphasised by studying J 2 (a parameter defining the extent of the rotational excitation) and Jz for the system under concern. For higher value of b, the maximum value obtained by J 2 increases and vice versa. Also, the molecule enters the transient mode for large b and v.

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