Femtosecond excitation dynamics of acetone: Dissociation, ionization, and the evolution of multiply charged elemental species

Buzza, S. A.; Snyder, Eric M.; Card, D. A.; Folmer, D. E.; Castleman, A. W.

doi:10.1063/1.472570

Cited by 38 publications

(21 citation statements)

References 29 publications

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“…Buzza CO] n−1 CH 3 CO + (n = 1− 4) by using a femtosecond laser ionization of acetone molecular beam [22]. These fragments were believed to have come from the dissociation of the larger clusters [23].…”

Section: Introductionmentioning

confidence: 99%

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Acetone: isomerization and aggregation

Cheng

et al. 2006

Front. Phys. China

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The advanced experimental and theoretical techniques enable us to obtain information on the rearrangement of atoms or molecules in a reaction nowadays. As an example, we report on our research work on acetone isomerization and aggregation to give an insight into the reaction pathways, the products and their structures, and the growth regularity of aggregation. The evidences on the structural change of acetone and the stability of acetone clusters are found by a laser ionization mass spectrometer and the results are interpreted from theoretical analysis based on the DFT/ B3LYP method. Various isomerization channels of acetone have been established and the optimal structures of the neutral clusters ( CH 3 COCH 3 ) n and the protonated acetone clusters (CH 3 COCH 3 ) n H + for n = 1−7 have been determined.

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Section: Introductionmentioning

confidence: 99%

“…Acetone clustering has been observed in supersonic molecular beams by various studies [7,[20][21][22][23]. Buzza CO] n−1 CH 3 CO + (n = 1− 4) by using a femtosecond laser ionization of acetone molecular beam [22].…”

Section: Introductionmentioning

confidence: 99%

Acetone: isomerization and aggregation

Cheng

et al. 2006

Front. Phys. China

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“…It provides a strong cou-pling to photons in a very narrow frequency window which makes clusters an ideal laboratory for laser induced non-linear dynamics [9,10]. The plasmon also serves as a versatile handle for pump and probe experiments [11,12,13,14,15], and it provides the key mechanism in driving the hefty Coulomb explosion of clusters [16,17]. For a recent summary on this great variety of phenomena of the dynamics of free metal clusters, see [18,19].…”

Section: Introductionmentioning

confidence: 99%

Embedded metal cluster in strong laser fields

Fehrer,

Dinh,

Reinhard

et al. 2007

Preprint

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We discuss microscopic mechanisms of the violent dynamics following strong laser excitation of a metal cluster embedded in a rare gas matrix, taking as test case Na8@Ar434. This covers at least two aspects: first, it represents the typical experimental situation of metal clusters handled in raregas matrices or a finite drop of surrounding raregas material, and second, it serves as a generic test case for highly excited chromophores in inert surroundings addressing questions of energy transport and perturbation of the medium. We simulate the process up to 10 ps using a mixed quantum mechanical (for the electrons) and classical (ions and atoms) approach and analyze the emerging dynamics with respect to all basic constituents: cluster electrons, cluster ions, and matrix atoms. We find several stages of relaxation taking place with time scales from a few fs to over a few ps and much slower processes remaining for long after the simulation. A particularly interesting aspect is that the surrounding raregas material stabilizes a highly charged metal cluster which would otherwise explode without delay.

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“…This precise and efficient tool has found a rapidly growing number of interesting applications like, e.g. laser ablation of metals and dielectrics1–3 and organic materials,4, 5 very fast ion generation from laser–solid6–17 and laser–cluster interaction,18–25 x‐ray production from laser–solid26, 27 and laser–cluster28–30 interaction and high‐order harmonic generation31–34 and multiple ionization and efficient fragmentation of molecules and clusters 35–41. Several interesting theoretical approaches have been proposed to model such situations, with special respect to efficient energy absorption and conversion into ion kinetic energies often observed in intense laser–matter interaction 19, 42–45.…”

Section: Introductionmentioning

confidence: 99%

A B‐TOF mass spectrometer for the analysis of ions with extreme high start‐up energies

Lezius

2002

J. Mass Spectrom.

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Weak magnetic deflection is combined with two acceleration stage time-of-flight mass spectrometry and subsequent position-sensitive ion detection. The experimental method, called B-TOF mass spectrometry, is described with respect to its theoretical background and some experimental results. It is demonstrated that the technique has distinct advantages over other approaches, with special respect to the identification and analysis of very highly energetic ions with an initially large energy broadening (up to 1 MeV) and with high charge states (up to 30+). Similar energetic targets are a common case in intense laser-matter interaction processes found during laser ablation, laser-cluster and laser-molecule interaction and fast particle and x-ray generation from laser-heated plasma.

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Femtosecond excitation dynamics of acetone: Dissociation, ionization, and the evolution of multiply charged elemental species

Cited by 38 publications

References 29 publications

Acetone: isomerization and aggregation

Acetone: isomerization and aggregation

Embedded metal cluster in strong laser fields

A B‐TOF mass spectrometer for the analysis of ions with extreme high start‐up energies

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