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41 results on '"Huttula, S-M"'

2. Auger decay of the 3 d hole in the isoelectronic series of Br, Kr + , and Rb 2 +

Author

Keskinen, J., Jänkälä, K., Huttula, S.-M., Kaneyasu, T., Hikosaka, Y., Shigemasa, E., Iwayama, H., Soejima, K., Ito, K., Andric, L., Khalal, M., Palaudoux, J., Penent, F., Lablanquie, P., Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), and Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021
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3. Auger decay of the 3d hole in the isoelectronic series of Br, Kr+ , and Rb2+

Author

Keskinen, J., primary, Jänkälä, K., additional, Huttula, S.-M., additional, Kaneyasu, T., additional, Hikosaka, Y., additional, Shigemasa, E., additional, Iwayama, H., additional, Soejima, K., additional, Ito, K., additional, Andric, L., additional, Khalal, M. A., additional, Palaudoux, J., additional, Penent, F., additional, and Lablanquie, P., additional

Published
2021
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5. Multielectron spectroscopy:energy levels of Kn⁺ and Rbn⁺ ions (n = 2, 3, 4)

Author

Khalal, M. A. (M A), Soronen, J. (J), Jänkälä, K. (K), Huttula, S.-M. (S-M), Huttula, M. (M), Bizau, J.-M. (J-M), Cubaynes, D. (D), Guilbaud, S. (S), Ito, K. (K), Andric, L. (L), Feng, J. (J), Lablanquie, P. (P), Palaudoux, J. (J), and Penent, F. (F)

Subjects
Physics::Atomic Physics
Abstract

A magnetic bottle time-of-flight spectrometer has been used to perform spectroscopy of K n⁺ and Rb n⁺ states with ionization degrees n of 2, 3 and 4. Energy levels are directly measured by detecting in coincidence the n electrons that are emitted as a result of single photon absorption. Experimental results are compared with the energies from the NIST atomic database and ab initio multiconfiguration Dirac–Fock calculations. Previously unidentified 3p ⁴(³P)3d ¹ ⁴D energy levels of K²⁺ are assigned.

Published
2017

6. Multielectron spectroscopy: energy levels of Kn+and Rbn+ions (n= 2, 3, 4)

Author

Khalal, M A, primary, Soronen, J, additional, Jänkälä, K, additional, Huttula, S-M, additional, Huttula, M, additional, Bizau, J-M, additional, Cubaynes, D, additional, Guilbaud, S, additional, Ito, K, additional, Andric, L, additional, Feng, J, additional, Lablanquie, P, additional, Palaudoux, J, additional, and Penent, F, additional

Published
2017
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7. Auger resonant-Raman study at the Ar K edge as probe of electronic-state-lifetime interferences

Author

Ceolin, D., Marchenko, T., Guillemin, R., Journel, L., Kushawaha, R. K., Carniato, S., Huttula, S. -M, Rueff, J. P., Armen, G. B., Piancastelli, Maria Novella, Simon, M., Ceolin, D., Marchenko, T., Guillemin, R., Journel, L., Kushawaha, R. K., Carniato, S., Huttula, S. -M, Rueff, J. P., Armen, G. B., Piancastelli, Maria Novella, and Simon, M.

Abstract

The resonant-Auger decay in argon following Ar 1s - np excitations was studied under resonant-Raman conditions, i.e., with a total instrumental bandwidth much narrower than the natural linewidth of the absorption features. These state-of-the-art experiments are combined with a radiationless resonant-Raman scattering theory. The main results include identification of the energy position of some high-lying Rydberg states previously masked by insufficient resolution and clear evidence of electronic-state-lifetime interference phenomena.

Published
2015
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9. Post-collision interaction in Potassium 3s photoionization

Author

Sheinerman, S, primary, Lablanquie, P, additional, Andric, L, additional, Ito, K, additional, Palaudoux, J, additional, Huttula, S-M, additional, Huttula, M, additional, Jänkälä, K, additional, Soronen, J, additional, Bizau, J-M, additional, Guilbaud, S, additional, Cubaynes, D, additional, and Penent, F, additional

Published
2015
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10. Valence Auger decay following3sphotoionization in potassium

Author

Palaudoux, J., primary, Sheinerman, S., additional, Soronen, J., additional, Huttula, S.-M., additional, Huttula, M., additional, Jänkälä, K., additional, Andric, L., additional, Ito, K., additional, Lablanquie, P., additional, Penent, F., additional, Bizau, J.-M., additional, Guilbaud, S., additional, and Cubaynes, D., additional

Published
2015
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14. Decay of a 2p inner-shell hole in an Ar+ ion

Author

Huttula, S-M, primary, Lablanquie, P, additional, Andric, L, additional, Palaudoux, J, additional, Huttula, M, additional, Sheinerman, S, additional, Shigemasa, E, additional, Hikosaka, Y, additional, Ito, K, additional, and Penent, F, additional

Published
2014
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17. Decay of a2pInner-Shell Hole in anAr+Ion

Author

Huttula, S.-M., primary, Lablanquie, P., additional, Andric, L., additional, Palaudoux, J., additional, Huttula, M., additional, Sheinerman, S., additional, Shigemasa, E., additional, Hikosaka, Y., additional, Ito, K., additional, and Penent, F., additional

Published
2013
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33. Angular distributions and correlations in auger cascades of atomic argon following 2p→4s excitation.

Author

Ueda, K., Shimizu, Y., Chiba, H., Sato, Y., Kitajima, M., Tanaka, H., Huttula, S.-M., Aksela, H., Sazhina, I. P., and Kabachnik, N. M.

Subjects
ARGON, ANISOTROPY
Abstract

We have measured the angular distributions of the resonant Auger and the second-step Auger electrons ejected in the processes Ar[sup *](2p[sup 5]3s[sup 2]3p[sup 6]([sup 2]P[sub j0])4s, J[sub 0]=1)→Ar[sup *+](2p[sup 6]3s3p[sup 5]([sup 1]P[sub 1])4s[sup 2]P[sub 1/2,3/2])+e[sub 1][sup -] and Ar[sup *+](2p[sup 6]3s3p[sup 5]([sup 1]P[sub 1])4s[sup 2]P[sub 1/2,3/2])→Ar[sup ++](2p[sup 6]3s[sup 2]3p[sup 43]P[sub 0,1,2])+e[sub 2][sup -], respectively, and the angular correlations between these two electrons. Based on these results, we discuss a key role of the lifetime interference effect in the angular distribution of the second-step Auger electrons and the extraction of the Auger amplitudes from the experimental data. The experimental results are compared with the multi-configuration Dirac-Fock calculations. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

35. Decay of a 2p Inner-Shell Hole in an Ar+ Ion.

Author

Huttula, S.-M., Lablanquie, P., Andric, L., Palaudoux, J., Huttula, M., Sheinerman, S., Shigemasa, E., Hikosaka, Y., Ito, K., and Penent, F.

Subjects
*PHOTOELECTRONS, *IONIZATION (Atomic physics), *PHOTOIONIZATION, *ELECTRON research, *IONS
Abstract

Direct measurements of the photoelectrons or Auger electrons associated with inner shell ionization of positively charged ions are extremely difficult and rarely realized. We propose an alternative method to simulate such measurements, based on core valence double photoionization of the neutral species. As an example, we obtain the spectroscopy, lifetimes, and Auger decays of the states arising from 2p inner shell ionisation of an Ar+ ion. Observations compare well with theoretical predictions obtained within multiconfigurational Dirac-Fock formalism. [ABSTRACT FROM AUTHOR]

Published
2013
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36. Auger decay paths of mercury 5p and 4f vacancies revealed by multielectron spectroscopy.

Author

Palaudoux, J., Huttula, S.-M., Huttula, M., Penent, F., Andric, L., and Lablanquie, P.

Subjects
*AUGER effect, *MERCURY, *COSTER-Kronig transitions, *SPECTROMETRY, *AB initio quantum chemistry methods, *RELATIVISTIC quantum mechanics
Abstract

Single and double Auger processes following ionization of 4 f and 5p inner shells have been studied using multielectron coincidence spectroscopy. Coincidence technique enables us to resolve state by state all single and double Auger paths with a resolution better than the lifetime broadening. Drastic step-to-step decay lifetime changes are observed and reported as Coster-Kronig transition takes place either in the first (5p) or in the second (4f) step of the Auger cascade. Relativistic ab initio theory has been used to predict and interpret the experimental observations. [ABSTRACT FROM AUTHOR]

Published
2015
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37. 3p photoionization and subsequent Auger decay of atomic germanium.

Author

Anin, D., Jänkälä, K., Huttula, S. -M., and Huttula, M.

Subjects
*PHOTOIONIZATION, *AUGER effect, *NEUTRAL beams, *GERMANIUM, *SPECTRAL sensitivity
Abstract

The 3p photoionization and subsequent Auger decay of initially neutral atomic germanium is studied both experimentally and theoretically. The binding energies and relative intensities of the 3p photoelectron spectrum are given. The M2,3 M3,4 M3,4 and M2,3 M3,4 N Auger electron spectrum leading to doubly ionized final states is presented. The photoelectron and Auger electron spectra were interpreted using multiconfiguration Dirac-Fock calculations that provided the identification for the main spectral features. [ABSTRACT FROM AUTHOR]

Published
2012
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38. Valence Auger decay following 3s photoionization in potassium.

Author

Palaudoux, J., Sheinerman, S., Soronen, J., Huttula, S.-M., Huttula, M., Jänkälä, K., Andric, L., Ito, K., Lablanquie, P., Penent, F., Bizau, J.-M., Guilbaud, S., and Cubaynes, D.

Subjects
*PHOTOIONIZATION, *POTASSIUM, *VALENCE (Chemistry), *AUGER effect, *ELECTRON configuration
Abstract

We have studied photoionization in the inner valence 3i subshell of and the spectroscopic properties of the two 3s-1 (¹S) and (³S) resulting states. Similar to the Rb and Cs cases, the lifetime widths of the (¹S) and (³S) states are found to be markedly different, due to the electron correlation effects. The main part of the study deals with the subsequent Auger decay of the 3s-1 states, which have the particularity to involve low energy (~5 eV) Auger electrons. A magnetic bottle spectrometer with a multicoincidence technique has been used to observe and filter the Auger spectra with respect to the K2+ final state. The evolution of these Auger spectra has been investigated near the ionization threshold. They show strong post-collision interaction (PCI) effects, which are well reproduced by semiclassical and eikonal models. They reveal the importance of the photoelectron-Auger-electron interaction associated with these low energy Auger electrons. [ABSTRACT FROM AUTHOR]

Published
2015
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39. Quantum Brownian magneto-oscillator: Role of environmental spectrum and external magnetic field in decoherence and decay processes.

Author

Palaudoux, J., Sheinerman, S., Soronen, J., Huttula, S.-M., Huttula, M., Jänkälä, K., Andric, L., Ito, K., Lablanquie, P., Penent, F., Bizau, J.-M., Guilbaud, S., and Cubaynes, D.

Subjects
*POTASSIUM, *PHOTOIONIZATION, *AUGER effect, *ELECTRON configuration, *ELECTRON-electron interactions
Abstract

In this work, we consider the dissipative dynamics of a quantum Brownian magneto-oscillator in contact with different types of environment at zero temperature as well as at high temperatures. We derive closed-form expressions of decay rate and heating rate for the magneto-oscillator in contact with Ohmic, sub-Ohmic, and super-Ohmic environments with non-Markovian characteristics. The present study is useful in determining the relationship between the thermalization dynamics of a magneto-oscillator and different forms of environmental spectrum and external magnetic field. Although our study is limited to the short-time (Non-Markovian) and long-time (Markovian) regimes, it manifests that one can actually tune the effective coupling of the system reservoir either by tuning oscillator frequency through reservoir engineering techniques or changing external magnetic field. Thus the present work establishes the essential role of non-Markovian dissipation and the crucial role of magnetic field in the environment induced decoherence and decay processes of the dissipative magneto-oscillator. [ABSTRACT FROM AUTHOR]

Published
2015
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40. Analysis of 3d photoionization and subsequent Auger decay of atomic germanium.

Author

Jänkälä, K., Anin, D., Urpelainen, S., Huttula, S.-M., Heinäsmäki, S., and Huttula, M.

Subjects
*PHOTOIONIZATION, *AUGER electron spectroscopy, *PHOTOELECTRONS, *GERMANIUM spectra, *BINDING energy
Abstract

Experimental and theoretical study of the 3d photoionization and subsequent Auger decay of initially neutral atomic germanium is presented. The features of the high-resolution photoelectron and Auger electron spectra are interpreted with the aid of multiconfiguration calculations. The binding energies and relative cross sections of the 3d ionized fine-structure states of Ge are given. The complete M4.5N N Auger electron spectrum to doubly ionized final states of the Ge ion is interpreted and discussed. [ABSTRACT FROM AUTHOR]

Published
2011
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41. Decay of a 2p inner-shell hole in an Ar(+) ion.

Author

Huttula SM, Lablanquie P, Andric L, Palaudoux J, Huttula M, Sheinerman S, Shigemasa E, Hikosaka Y, Ito K, and Penent F

Abstract

Direct measurements of the photoelectrons or Auger electrons associated with inner shell ionization of positively charged ions are extremely difficult and rarely realized. We propose an alternative method to simulate such measurements, based on core valence double photoionization of the neutral species. As an example, we obtain the spectroscopy, lifetimes, and Auger decays of the states arising from 2p inner shell ionisation of an Ar(+) ion. Observations compare well with theoretical predictions obtained within multiconfigurational Dirac-Fock formalism.

Published
2013
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