Short pulse laser-induced dissociation of vibrationally cold, trapped molecular ions

Alexander, John D.; Calvert, C. R.; King, R. B.; Kelly, Orla; Bryan, William A.; Németh, Gergely; Newell, W R; Froud, C. A.; Turcu, I. C. E.; Springate, E.; Orr, P.; Pedregosa-Gutierrez, Jofre; Walter, C. W.; Williams, Rebecca; Williams, Ian D.; Greenwood, J. B.

doi:10.1088/0953-4075/42/15/154027

Cited by 23 publications

(13 citation statements)

References 33 publications

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“…They show a perfect agreement with two independent groups [10,36]. We also tried to reproduce the data of [37] using H þ 2 at 1.0 keV and a negative potential on the Einzel lens. We also predict three stability intervals, approximately at the same position, because we have not taken into account the differences in the geometry of their trap.…”

Section: Application: Stability Mapsupporting

confidence: 71%

Analytical study of electrostatic ion beam traps

Vallette

Indelicato

2010

Phys. Rev. ST Accel. Beams

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The use of electrostatic ion beam traps requires one to set many potentials on the electrodes (ten in our case), making the tuning much more difficult than with quadrupole traps. In order to obtain the best trapping conditions, an analytical formula giving the electrostatic potential inside the trap is required. In this paper, we present a general method to calculate the analytical expression of the electrostatic potential in any axisymmetric set of electrodes. We use conformal mapping to simplify the geometry of the boundary. The calculation is then performed in a space of simple geometry. We show that this method, providing good accuracy, allows one to obtain the potential on the axis as an analytic function of the potentials applied to the electrodes, thus leading to fast, accurate, and efficient calculations. We conclude by presenting stability maps depending on the potentials that enabled us to find the good trapping conditions for O 4þ at much higher energies than what has been achieved until now.

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Section: Application: Stability Mapsupporting

confidence: 71%

Analytical study of electrostatic ion beam traps

Vallette

Indelicato

2010

Phys. Rev. ST Accel. Beams

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“…One such trap has been built at Queen's University, Belfast. 13 As part of the CSR project in Heidelberg, a Zajfman trap has been installed in a cryogenic chamber and storage lifetimes of several minutes have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

First storage of ion beams in the Double Electrostatic Ion-Ring Experiment: DESIREE

Schmidt

Thomas

Gatchell

et al. 2013

Review of Scientific Instruments

124

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We report on the first storage of ion beams in the Double ElectroStatic Ion Ring ExpEriment, DESIREE, at Stockholm University. We have produced beams of atomic carbon anions and small carbon anion molecules (C − n , n = 1, 2, 3, 4) in a sputter ion source. The ion beams were accelerated to 10 keV kinetic energy and stored in an electrostatic ion storage ring enclosed in a vacuum chamber at 13 K. For 10 keV C − 2 molecular anions we measure the residual-gas limited beam storage lifetime to be 448 s ± 18 s with two independent detector systems. Using the measured storage lifetimes we estimate that the residual gas pressure is in the 10 −14 mbar range. When high current ion beams are injected, the number of stored particles does not follow a single exponential decay law as would be expected for stored particles lost solely due to electron detachment in collision with the residual-gas. Instead, we observe a faster initial decay rate, which we ascribe to the effect of the space charge of the ion beam on the storage capacity. © 2013 AIP Publishing LLC. [http://dx

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“…The mechanisms have been described in detail in recent review articles [7][8][9] and studies of the fragmentation dynamics and energetics continue to yield interesting developments for both gas phase neutral targets (e.g. [28][29][30][31] and ion beam targets [32][33][34][35][36][37][38][39]. Internuclear separation, R(au)…”

Section: Intense-field Femtosecond Fragmentation and Ionisation Of Dmentioning

confidence: 99%

“…[28][29][30][31]) and ion beams (e.g. [34][35][36][37][38][39]). Beyond this, other exciting advances are now being made in short pulse studies of imaging/controlling molecular dynamics.…”

Section: Future Outlookmentioning

confidence: 99%

Time-resolved studies of ultrafast wavepacket dynamics in hydrogen molecules

et al. 2010

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a b s t r a c tRecent advances in the study of quantum vibrations and rotations in the fundamental hydrogen molecules are reported. Using the deuterium molecules (D + 2 and D 2 ) as exemplars, the application of ultrafast femtosecond pump-probe experiments to study the creation and time-resolved imaging of coherent nuclear wavepackets is discussed. The ability to study the motion of these fundamental molecules in the time-domain is a notable milestone, made possible through the advent of ultrashort intense laser pulses with durations on sub-vibrational (and sub-rotational) timescales. Quantum wavepacket revivals are characterised for both vibrational and rotational degrees of freedom and quantum models are used to provide a detailed discussion of the underlying ultrafast physical dynamics for the specialist and non-specialist alike.

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Short pulse laser-induced dissociation of vibrationally cold, trapped molecular ions

Cited by 23 publications

References 33 publications

Analytical study of electrostatic ion beam traps

Analytical study of electrostatic ion beam traps

First storage of ion beams in the Double Electrostatic Ion-Ring Experiment: DESIREE

Time-resolved studies of ultrafast wavepacket dynamics in hydrogen molecules

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