A broad-application microchannel-plate detector system for advanced particle or photon detection tasks: large area imaging, precise multi-hit timing information and high detection rate

Jagutzki, O.; Mergel, V.; Ullmann-Pfleger, K.; Spielberger, L.; Spillmann, U.; Dörner, R.; Schmidt‐Böcking, H.

doi:10.1016/s0168-9002(01)01839-3

Cited by 214 publications

(119 citation statements)

References 8 publications

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“…The jet is a mixture of H 2 and D 2 with a ratio of 1:1, so that both targets can be probed under identical conditions. The ions and electrons created by the laser were accelerated by a static electric field (B14.7 V cm À 1 ) and detected by two-time and positionsensitive microchannel plate detectors 35 at opposite sides of the spectrometer. A weak homogeneous magnetic field (B9.2 Gauss) is used to enable the detection of the electron within a 4p solid angle.…”

Section: Methodsmentioning

confidence: 99%

Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Magrakvelidze

Schmidt

et al. 2013

Nat Commun

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Electron motion in chemical bonds occurs on an attosecond timescale. This ultrafast motion can be driven by strong laser fields. Ultrashort asymmetric laser pulses are known to direct electrons to a certain direction. But do symmetric laser pulses destroy symmetry in breaking chemical bonds? Here we answer this question in the affirmative by employing a two-particle coincidence technique to investigate the ionization and fragmentation of H 2 by a long circularly polarized multicycle femtosecond laser pulse. Angular streaking and the coincidence detection of electrons and ions are employed to recover the phase of the electric field, at the instant of ionization and in the molecular frame, revealing a phase-dependent anisotropy in the angular distribution of H þ fragments. Our results show that electron localization and asymmetrical breaking of molecular bonds are ubiquitous, even in symmetric laser pulses. The technique we describe is robust and provides a powerful tool for ultrafast science.

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Section: Methodsmentioning

confidence: 99%

Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Magrakvelidze

Schmidt

et al. 2013

Nat Commun

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“…We use microchannel-plate (MCP) detectors with delayline anodes [20][21][22] to record the time-of-flight (TOF) to and the position of impact on the detector of both species (electrons and ions) in an event-mode data-acquisition scheme. From the recorded information, the 3D momentum vectors for each of the charged fragments are retrieved, enabling the realization of kinematically complete experiments (e.g., [17][18][19]).…”

Section: Experimental Methodsmentioning

confidence: 99%

Hydrogen and fluorine migration in photo-double-ionization of 1,1-difluoroethylene (1,1-C2H2F2
Gaire
¹
,
Bocharova
²
,
Sturm
³

et al. 2014
Phys. Rev. A
4
1
13
0
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We have studied the nondissociative and dissociative photo-double-ionization of 1,1-difluoroethylene using single photons of energies ranging from 40 to 70 eV. Applying a coincident electron-ion three-dimensional momentum imaging technique, kinematically complete measurements have been achieved. We present the branching ratios of the six reaction channels identified in the experiment. Electron-ion energy maps and relative electron emission angles are used to distinguish between direct and indirect photo-double-ionization mechanisms at a few different photon energies. The influence of selection and propensity rules is discussed. Threshold energies of double ionization are extracted from the sum of the kinetic energies of the electrons, which hint to the involvement of different manifolds of states. The dissociative ionization channels with two ionic fragments are explored in detail by measuring the kinetic energy release of the fragment ions, sum of the kinetic energies, as well as the energy sharing of the two emitted electrons. We investigate the migration of hydrogen and fluorine atoms and compare the experimental results to the photo-double-ionization of centrosymmetric linear and planar hydrocarbons (C 2 H 2 and C 2 H 4 ) whenever possible.

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“…Ions and electrons created in the focus are guided by a 1:6V =cm electric and a 10.5 G magnetic field towards two large area microchannel plate detectors ( 80mm) with delay line position encoding [23]. The polarization axis of the laser is parallel to the spectrometer field.…”

mentioning

confidence: 99%

Binary and Recoil Collisions in Strong Field Double Ionization of Helium

et al. 2007

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Binary and recoil collisions in strong field double ionization of helium Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1103/PhysRevLett.99.263002Physical Review Letters, 99, 26, 2007 We have investigated the correlated momentum distribution of both electrons from nonsequential double ionization of helium in a 800 nm, 4:5 10 14 W=cm 2 laser field. Using very high resolution coincidence techniques, we find a so-far unobserved fingerlike structure in the correlated electron momentum distribution. The structure can be interpreted as a signature of the microscopic dynamics in the recollision process. We identify features corresponding to the binary and recoil lobe in field-free (e; 2e) collisions. This interpretation is supported by analyzing ab initio solutions of a fully correlated three-dimensional helium model. Binary and Recoil Collisions in Strong Field Double Ionization of Helium

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A broad-application microchannel-plate detector system for advanced particle or photon detection tasks: large area imaging, precise multi-hit timing information and high detection rate

Cited by 214 publications

References 8 publications

Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Hydrogen and fluorine migration in photo-double-ionization of 1,1-difluoroethylene (1,1-C2H2F2
Gaire
¹
,
Bocharova
²
,
Sturm
³

et al. 2014
Phys. Rev. A
4
1
13
0
View full text Add to dashboard Cite

Binary and Recoil Collisions in Strong Field Double Ionization of Helium

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A broad-application microchannel-plate detector system for advanced particle or photon detection tasks: large area imaging, precise multi-hit timing information and high detection rate

Cited by 214 publications

References 8 publications

Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Understanding the role of phase in chemical bond breaking with coincidence angular streaking

Hydrogen and fluorine migration in photo-double-ionization of 1,1-difluoroethylene (1,1-C2H2F2Gaire1, Bocharova2, Sturm3 et al. 2014Phys. Rev. A41130View full textAdd to dashboardCite

Binary and Recoil Collisions in Strong Field Double Ionization of Helium

Contact Info

Product

Resources

About

Hydrogen and fluorine migration in photo-double-ionization of 1,1-difluoroethylene (1,1-C2H2F2
Gaire
¹
,
Bocharova
²
,
Sturm
³

et al. 2014
Phys. Rev. A
4
1
13
0
View full text Add to dashboard Cite