High resolution single-photon ionization of HBr in the spin–orbit autoionization region

Irrgang, R; Böwering, N.; Drescher, Markus; Spieweck, M; Heinzmann, Ulrich

doi:10.1063/1.471630

Cited by 14 publications

(28 citation statements)

References 15 publications

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“…In contrast, fewer studies of autoionization in heavier diatomics, for which spin-orbit or electronic autoionization assume a greater role, have been reported, although considerable effort has been devoted to the hydrogen-halides. [35][36][37][38] …”

Section: B Electronic Autoionization In Imentioning

confidence: 99%

Autoionization in I and I2 observed by multiphoton ionization and photoelectron spectroscopy: Two atomic iodine Rydberg series built on the …5s25p4 3P1 ion core and revised value for the I+(3P1) limit

Chojnacki

Zietkiewicz

et al. 2003

The Journal of Chemical Physics

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Articles you may be interested inPhotoionization of iodine atoms: Rydberg series which converge to the I + ( S 1 0 ) ← I ( P 2 3 / 2 ) threshold Two well-developed Rydberg series of atomic iodine, built on the ...5s 2 5 p 4 3 P 1 ion core and assigned to nd͓2͔ 5/2 and ns͓1͔ 3/2 states with principal quantum numbers as high as nϭ47, have been observed by two photon ͑566рՇ600 nm͒ ionization of I(6s 2 P 3/2 ), and time-of-flight photoelectron spectroscopy and mass spectrometry. The data reported here extend the nd͓2͔ 5/2 and ns͓1͔ 3/2 series by 27 and 23 terms, respectively. The limit for both series, 91 387.9Ϯ1.3 cm Ϫ1 , revises upwards by 5.8 cm Ϫ1 the value for the I ϩ ( 3 P 1 ) state energy suggested by Minnhagen in 1962 ͓Ark. Fys. 21, 415 ͑1962͔͒. The quantum defects for the nd͓2͔ 5/2 and ns͓1͔ 3/2 series were determined to be 2.44Ϯ0.03 and 4.03Ϯ0.02, respectively. Several terms of a third, weaker series were also detected and tentatively assigned to nd͓2͔ 3/2 states, also having the 3 P 1 ion core. Photoelectron peaks associated with direct, five photon ionization of I 2 have been observed and are attributed to electronic autoionization of A 2 ⌸ (3/2)u ion core Rydberg states into the X 2 ⌸ (1/2)g,(3/2)g ionization continua.

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Section: B Electronic Autoionization In Imentioning

confidence: 99%

Autoionization in I and I2 observed by multiphoton ionization and photoelectron spectroscopy: Two atomic iodine Rydberg series built on the …5s25p4 3P1 ion core and revised value for the I+(3P1) limit

Chojnacki

Zietkiewicz

et al. 2003

The Journal of Chemical Physics

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“…These final states are pseudobound, since they are located above the ionization potential of the lower spin-orbit state of the molecular ion, Br 2 + ͑ 2 ⌸ 3/2 ͒. As a result, the pseudobound electron undergoes spin-orbit autoionization 14,15 and carries off the excess energy as kinetic energy while the molecular ion core relaxes to the lower spin-orbit state. The photoelectron spectrum that is recorded corresponds to measuring the kinetic energy of these pseudobound electrons that are born from different high-lying Rydberg states.…”

Section: Introductionmentioning

confidence: 98%

Coherent ultrafast photoelectron spectroscopy in Br2: An alternative method for measuring Δv≠ transitions in Rydberg-to-Rydberg excitations

Stavros

Lau

Strasser

et al. 2006

The Journal of Chemical Physics

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A two-state vibrational wave packet is prepared in a low-lying 4d[12](1 or 2) Rydberg state of jet cooled Br(2) (4d, v(')=3 and v(')=4) by two-photon excitation with 266.5 nm pulses from an ultrafast laser. The wave packet is detected by autoionization following excitation with time-delayed 800 nm pulses to the n=8 (v(+)=4) and n=9 (v(+)=3) Rydberg states in the (2)Pi(12) angular momentum core state. Autoionization of each state occurs to the (2)Pi(32) state of the ion through spin-orbit ionization. Photoelectron spectroscopy is used to differentiate between the n=8 and n=9 ejected photoelectrons. Detection of the wave packet recurrences via the n=8 and n=9 Rydberg states reveals a pi phase-shift difference of the recurrences between the two final states. In each case, Delta v not equal 0 transitions are observed since wave packet recurrences are detected. By fitting the observed phase change of the recurrences with a simple model for the overlap amplitudes and assumptions about the potentials, we estimate, within the context of the model, that approximately 0.6% of the transitions may be attributed to Delta v= +/- 1 transitions between the initial Rydberg superposition state and the final Rydberg detection state.

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“…In particular, for the rotationally resolved photo-ionization of molecules [3][4][5][6], it is necessary to use a light source with a sufficiently high resolving power [7]. Up to now only laser-based techniques, such as REMPI [8], nonlinear frequency tripling [9,10] and resonant nonlinear frequency mixing [11] have complied with this requirement.…”

Section: Introductionmentioning

confidence: 99%

Temperature and Electric Field Dependences of Optical Damage in Proton-Exchanged Waveguides Formed on MgO-Doped Lithium Niobate Crystals

Ikeda

Nakayama

et al. 2005

Jpn. J. Appl. Phys.

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A laser-based light source for circularly polarized VUV radiation generated by nonlinear sum-frequency mixing is described. By choosing an appropriate nonlinear resonant process a light flux of up to 6 × 10 10 photons s −1 at a bandwidth smaller than 1.2 cm −1 is achieved. The determination of the polarization state is performed by means of using a four-mirror analyser. A degree of circular polarization greater than 0.99 was found for several mixing processes. These properties make this instrument an ideal source for high-resolution spectroscopic studies of polarization-dependent photo-ionization or photoemission at photon energies up to 14 eV.

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High resolution single-photon ionization of HBr in the spin–orbit autoionization region

Abstract: High energy high resolution monochromatic xray computed tomography using the Photon Factory vertical wiggler beamline Rev.

Cited by 14 publications

References 15 publications

Autoionization in I and I2 observed by multiphoton ionization and photoelectron spectroscopy: Two atomic iodine Rydberg series built on the …5s25p4 3P1 ion core and revised value for the I+(3P1) limit

Autoionization in I and I2 observed by multiphoton ionization and photoelectron spectroscopy: Two atomic iodine Rydberg series built on the …5s25p4 3P1 ion core and revised value for the I+(3P1) limit

Coherent ultrafast photoelectron spectroscopy in Br2: An alternative method for measuring Δv≠ transitions in Rydberg-to-Rydberg excitations

Temperature and Electric Field Dependences of Optical Damage in Proton-Exchanged Waveguides Formed on MgO-Doped Lithium Niobate Crystals

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