Search Results - "de Brito, A. N"

Photostability of gas- and solid-phase biomolecules within dense molecular clouds due to soft X-rays by Pilling, S., Andrade, D. P. P., do Nascimento, E. M., Marinho, R. R. T., Boechat-Roberty, H. M., de Coutinho, L. H., de Souza, G. G. B., de Castilho, R. B., Cavasso-Filho, R. L., Lago, A. F., de Brito, A. N.

“…An experimental photochemistry study involving gas- and solid-phase amino acids (glycine, DL-valine, DL-proline) and nucleobases (adenine and uracil) under…”
Get full text

Advances on the Brazilian toroidal grating monochromator (TGM) beamline by Filho, R.L. Cavasso, Homem, M.G.P., Landers, R., de Brito, A. Naves

“…We report on an important advance for the vacuum ultraviolet and soft X-ray TGM beamline at Laboratório Nacional de Luz Síncrotron (LNLS). This beamline…”
Get full text

Interaction of Torsional Oscillations with Polarons and Bipolarons in Conjugated Polymer by de Brito, Alexandre Naves, Silva, Geraldo Magela e

“…We propose a model for the electronic interaction associated with torsional and bond length vibrations in quasi one dimensional chains of conjugated polymers…”
Get full text

Observation of a continuum-continuum interference hole in ultrafast dissociating core-excited molecules by Feifel, R, Burmeister, F, Sałek, P, Piancastelli, M N, Bässler, M, Sorensen, S L, Miron, C, Wang, H, Hjelte, I, Björneholm, O, Naves de Brito, A, Gel'mukhanov, F K, Agren, H, Svensson, S

“…The femtosecond dissociation of HCl after core excitation has been studied through the resonant Auger decay. The spectra contain contributions from decay…”
Get full text

Femtosecond dissociation dynamics of core-excited molecular water by Naves de Brito, A, Feifel, R, Mocellin, A, Machado, A.B, Sundin, S, Hjelte, I, Sorensen, S.L, Björneholm, O

“…The fragmentation of the water molecule upon resonant core excitation and subsequent Auger decay has been studied by electron–ion coincidence spectroscopy. A…”
Get full text

Interference Quenching of ν ′ ′ = 1 Vibrational Line in Resonant Photoemission of N 2 : A Possibility to Obtain Geometrical Information on the Core-Excited State by Feifel, R., Gel’mukhanov, F., Baev, A., Ågren, H., Piancastelli, M. N., Bässler, M., Miron, C., Sorensen, S. L., Naves de Brito, A., Björneholm, O., Karlsson, L., Svensson, S.

“…An interference quenching of the nu=1 vibrational line in the resonant Auger decay of N 1s-->pi(*) core-excited N-2 is observed and analyzed. The intensity…”
Get full text

Role of stray light in the formation of high-resolution resonant photoelectron spectra: an experimental and theoretical study of N 2 by Feifel, R., Baev, A., Gel’mukhanov, F., Ågren, H., Andersson, M., Öhrwall, G., Piancastelli, M.N., Miron, C., Sorensen, S.L., Naves de Brito, A., Björneholm, O., Karlsson, L., Svensson, S.

“…We show that the undular stray light, diffusely scattered by the optical system of a synchrotron beamline, can play an important role in the formation of…”
Get full text

Memories of excited femtoseconds: effects of core–hole localization after Auger decay in the fragmentation of ozone by Naves de Brito, A., Sundin, S., Marinho, R.R., Hjelte, I., Fraguas, G., Gejo, T., Kosugi, N., Sorensen, S., Björneholm, O.

“…We present the first photoelectron–photoion–photoion coincidence (PEPIPICO) spectra of ozone, O 3, excited at the O1s edge. From symmetry considerations the…”
Get full text

Dynamical suppression of atomic peaks in resonant dissociative photoemission by Sałek, P., Carravetta, V., Gel'mukhanov, F.Kh, Ågren, H., Schimmelpfennig, B., Piancastelli, M.-N., Sorensen, L., Feifel, R., Hjelte, I., Bässler, M., Svensson, S., Björneholm, O., Naves de Brito, A.

“…Resonant excitation to the F1s-σ * dissociative state in hydrogen fluoride gives a photoelectron spectrum where the spectator part contains strong atomic lines…”
Get full text

Generalization of the duration-time concept for interpreting high-resolution resonant photoemission spectra by Feifel, R., Baev, A., Gel’mukhanov, F., Ågren, H., Piancastelli, M. N., Andersson, M., Öhrwall, G., Miron, C., Meyer, M., Sorensen, S. L., Naves de Brito, A., Björneholm, O., Karlsson, L., Svensson, S.

“…The duration-time concept, vastly successful for interpreting the frequency dependence of resonant radiative and nonradiative x-ray scattering spectra, is…”
Get full text

Photostability of gas- and solid-phase biomolecules within dense molecular clouds due to soft X-rays by Pilling, S, Andrade, D. P. P, Nascimento, E. M. do, Marinho, R. R. T, Boechat-Roberty, H. M, de Coutinho, L. H, de Souza, G. G. B, de Castilho, R. B, Cavasso-Filho, R. L, Lago, A. F, de Brito, A. N

“…An experimental photochemistry study involving gas- and solid-phase amino acids (glycine, DL-valine, DL-proline) and nucleobases (adenine and uracil) under…”
Get full text

Photostability of gas- and solid-phase biomolecules within dense molecular clouds due to soft X-rays: Photostability of biomolecules in ISM by Pilling, S., Andrade, D. P. P., do Nascimento, E. M., Marinho, R. R. T., Boechat-Roberty, H. M., de Coutinho, L. H., de Souza, G. G. B., de Castilho, R. B., Cavasso-Filho, R. L., Lago, A. F., de Brito, A. N.

Get full text

Dissociative photoionization of the tetramethyl silane molecule, Si(CH 3) 4, around the Si 1s edge by Almeida, D.P., Santos, A.C.F., Homem, M.G.P., de Brito, A.N., Boechat-Roberty, H.M., de Souza, G.G.B.

“…Photoionization of the Si[CH 3] 4 molecule has been studied around the Si 1s edge, using time-of-flight mass spectrometry, photoelectron–photoion coincidence…”
Get full text

Geometrical information on core-excited states obtained from interference quenching of vibrational states in resonant x-ray photoemission by Baev, A., Feifel, R., Gel’mukhanov, F., Ågren, H., Piancastelli, M. N., Bässler, M., Miron, C., Sorensen, S. L., Naves de Brito, A., Björneholm, O., Karlsson, L., Svensson, S.

“…An interference quenching of the m=1 final state vibrational line in the resonant Auger decay of N 1s{yields}{pi}{sup *} core-excited N{sub 2} is observed and…”
Get full text

Laryngostroboscopic findings in postmenopausal women by Okasaki, P.T., Korn, G.P., Neto, J.C., Melo, N.A. de Brito, Cahali, R.B., Júnior, E. Araujo, Suzuki, F.A.

Get full text

Multiple photoionization of Ar in the K-edge region: New results by Almeida, D.P., Santos, A.C.F., Homem, M.G.P., de Brito, A.N., de Souza, G.G.B.

“…Single and multiple photoionization branching ratios of Ar have been measured for photon energies around the K-edge region between 3198 and 3212 eV using…”
Get full text

Ionic dissociation of glycine, alanine, valine and proline as induced by VUV (21.21 eV) photons by Lago, A.F., Coutinho, L.H., Marinho, R.R.T., Naves de Brito, A., de Souza, G.G.B.

“…Ionic fragmentation of the sublimated α-amino acids glycine, l-alanine, l-proline and l-valine has been studied using a time-of-flight mass spectrometer…”
Get full text

Selective probing of the electronic structure of free clusters using resonant core-level spectroscopy by Tchaplyguine, M, Feifel, R, Marinho, R.R.T, Gisselbrecht, M, Sorensen, S.L, Naves de Brito, A, Mårtensson, N, Svensson, S, Björneholm, O

“…In this paper the first resonant photoemission and partial electron yield studies of free clusters are presented. The resonant photoemission spectra of free…”
Get full text

Secondary ion emission from condensed CO bombarded by fission fragments by Farenzena, L.S., Martinez, R., Iza, P., Ponciano, C.R., Homem, M.G.P., Naves de Brito, A., da Silveira, E.F., Wien, K.

“…Frozen CO was bombarded by ∼65 MeV fission fragments and the emitted secondary ions were analyzed by time-of-flight mass spectrometry. Target was kept at UHV…”
Get full text

Dietary intake and zinc status in amyotrophic lateral sclerosis patients by Lopes da Silva, Heloisa Fernanda, Brito, Acsa Nara Araújo, Freitas, Erika Paula Silva de, Dourado, Jr, Mário Emílio Teixeira, Sena-Evangelista, Karine Cavalcanti Maurício, Leite Lais, Lucia

“…There is considerable evidence that abnormal zinc homeostasis is related to amyotrophic lateral sclerosis (ALS) pathogenesis, and malnutrition is an…”
Get full text