Dr Igor Ivanov

Position	Other
Department	Fundamental & Theoretical Physics
Research group	Subatomic physics group
Qualifications	PhD DSc Moscow
Office phone	(02) 612 54537
Email

Publications

Book chapter

Ivanov I, Kheifets A
Atoms with one and two active electrons in strong laser fields
Fragmentation Processes: Topics in Atomic and Molecular Physics
Cambridge University Press, United States (2013) 98-110

(1 publications)

Journal article

Ivanov I, Kheifets A, Schimmoller A, Landsman A, Kim K
Evidence for nonzero electron velocity at the tunnel exit in strong-field atomic ionization
Physical Review Research 6, 2(2024)

Ivanov I, Kheifets A, Kim K
Correlation analysis of frustrated tunneling ionization
Physical Review A 107, 4(2023) 9

Ivanov I, Kheifets A, Kim K
Tracking quantum-cloud expansion in tunneling ionization
Physical Review A 108, 5(2023)

Ivanov I, Kheifets A, Taec Kim K
Interference patterns in ionization of Kramers–Henneberger atom
Scientific Reports 12, 1(2022)

Kheifets A, Cesca J, Serov V, Kim K, Ivanov I
Two-pulse interference and correlation in an attoclock
Physical Review A 104, 3(2021) 1-8

Ivanov I, Kheifets A, Kim K
Time correlation inside a laser pulse
Physical Review A 101, 4(2020)

Ivanov I, Nam C, Kim K
Entropy-based view of the strong field ionization process
Journal of Physics B: Atomic, Molecular and Optical Physics 52, 8(2019) 1-11

Eckart S, Kunitski M, Ivanov I, Richter M, Fehre K, Hartung A, Rist J, Henrichs K, Trabert D, Schlott N, Schmidt L, Kheifets A
Subcycle interference upon tunnel ionization by counter-rotating two-color fields
Physical Review A 97, 4(2018) 1-5

Ivanov I
Spin-flip processes and nondipole effects in above-threshold ionization of hydrogen in ultrastrong laser fields
Physical Review A - Atomic, Molecular, and Optical Physics 96, 1(2017) 013419 12

Ivanov I, Kheifets A
Angle-dependent time delay in two-color XUV+IR photoemission of He and Ne
Physical Review A - Atomic, Molecular, and Optical Physics 96, 1(2017) 013408 5

Ivanov I, Nam C, Kim K
Photoionization in the presence of circularly polarized fundamental and odd-order harmonic fields
Physical Review A: Atomic, Molecular and Optical Physics 95, 5(2017)

Ivanov I, Nam C, Kim K
Exit point in the strong field ionization process
Scientific Reports 7(2017) 39919-39919

Khurmi C, Wallace W, U S, Ivanov I, Kheifets A, Tong X, Litvinyuk I, Sang R, Kielpinski D
Measuring laser carrier-envelope-phase effects in the noble gases with an atomic hydrogen calibration standard
Physical Review A - Atomic, Molecular, and Optical Physics 96, 1(2017) 013404 5

Heuser S, Jiménez-Galán A, Cirelli C, Marante C, Sabbar M, Boge R, Lucchini m, Gallmann L, Ivanov I, Kheifets A, Dahlström J, Lindroth E, Argenti L, Martin F, Keller U
Angular dependence of photoemission time delay in helium
Physical Review A: Atomic, Molecular and Optical Physics 94, 6(2016) 1-10

Ivanov I
Time evolution of the lateral-velocity distribution for a strong-field-ionization process
Physical Review A 93, 5(2016) 8

Ivanov I, Dubau J, Kim K
Nondipole effects in strong-field ionization
Physical Review A 94, 3(2016) 9

Ivanov I, Kheifets A, Calvert J, Goodall S, Wang X, Xu H, Palmer A, Kielpinski D, Litvinyuk I, Sang R
Transverse electron momentum distribution in tunneling and over the barrier ionization by laser pulses with varying ellipticity
Scientific Reports 6(2016) 19002-19002

Ivanov I, Nam C, Kim K
Low-energy structures in strong-field ionization
Physical Review A 93, 4(2016) 6

Ivanov I, Nam C, Kim K
Endpoint contribution to the instantaneous ionization rate for tunneling ionization
Physical Review A: Atomic, Molecular and Optical Physics 91, 6(2015) 063404 1-7

Torlina L, Morales F, Kaushal J, Ivanov I, Kheifets A, Zielinkski A, Scrinzi A, Muller H, Sukiasyan S, Ivanov M, Smirnova O
Interpreting Attoclock Measurements of Tunnelling Times
Nature Physics 11, 6(2015) 503-508

Ivanov I
Evolution of the transverse photoelectron-momentum distribution for atomic ionization driven by a laser pulse with varying ellipticity
Physical Review A - Atomic, Molecular, and Optical Physics 90, 1(2014) 013418

Ivanov I, Kheifets A
Relativistic effects in time delay of atomic photoionization
Physical Review A: Atomic, Molecular and Optical Physics 89, 4(2014) 043405

Ivanov I, Kheifets A
Strong-field ionization of He by elliptically polarized light in attoclock configuration
Physical Review A: Atomic, Molecular and Optical Physics 89, 2(2014) 021402/1-5

Ivanov I, Kheifets A, Bartschat K, Emmons J, Buczek S, Gryzlova E, Grum-Grzhimailo A
Displacement effect in strong-field atomic ionization by an XUV pulse
Physical Review A: Atomic, Molecular and Optical Physics 90, 4(2014) 043401/1-5

Kheifets A, Ivanov I
Transverse-electron-momentum distribution in pump-probe sequential double ionization
Physical Review A - Atomic, Molecular, and Optical Physics 90, 3(2014) 033404

Palatchi C, Dahlstrom J, Kheifets A, Ivanov I, Canaday D, Agostini P, DiMauro L
Atomic delay in helium, neon, argon and krypton
Journal of Physics B: Atomic, Molecular and Optical Physics 47, 24(2014)

Zhang L, Xia X, Roither S, Kartashov D, Wang Y, Wang C, Schoffler M, Shafir D, Corkum P, Baltuska A, Ivanov I, Kheifets A, Liu X, Staudte A, Kitzler M
Laser-sub-cycle two-dimensional electron-momentum mapping using orthogonal two-color fields
Physical Review A - Atomic, Molecular, and Optical Physics 90, 6(2014) 061401

Ivanov I, Dubau J
Jost-function approach to quantum defect theory
Physical Review A: Atomic, Molecular and Optical Physics 88, 2(2013) 1-4

Ivanov I, Kheifets A
Two-photon double ionization of the H-2 molecule: Cross sections and amplitude analysis
Physical Review A: Atomic, Molecular and Optical Physics 87, 2(2013) 1-7

Ivanov I, Kheifets A
Time delay in atomic photoionization with circularly polarized light
Physical Review A: Atomic, Molecular and Optical Physics 87, 3(2013) 1-6

Ivanov I, Kheifets A
Extraction of the attosecond time delay in atomic photoionization using the soft-photon approximation
Physical Review A: Atomic, Molecular and Optical Physics 87, 6(2013) 1-7

Pullen M, Wallace W, Laban D, Palmer A, Hanne G, Grum-Grzhimailo A, Bartschat K, Ivanov I, Kheifets A, Wells D, Quiney H, Tong X, Litvinyuk I, Sang R, Kielpinski D
Measurement of laser intensities approaching 10¹⁵ W/cm² with an accuracy of 1%
Physical Review A: Atomic, Molecular and Optical Physics 87, 5(2013) 1-6

Ivanov I
Double photoionization of the hydrogen molecule from the viewpoint of the time-delay theory
Physical Review A: Atomic, Molecular and Optical Physics 86, 2(2012) 1-5

Ivanov I, Kheifets A
Locating the origin of photoelectrons in atomic photoionizaton
Physical Review A: Atomic, Molecular and Optical Physics 85, 2(2012) 1-4

Ivanov I, Kheifets A
Time-dependent calculations of double photoionization of the aligned H-2 molecule
Physical Review A: Atomic, Molecular and Optical Physics 85, 1(2012) 8

Ivanov I, Kheifets A
Complete characterization of the process of single-photon two-electron ionization of helium
Journal of Physics: Conference Series(online) 388, 2(2012) 1

Ivanov I, Kheifets A, Serov V
Attosecond time-delay spectroscopy of the hydrogen molecule
Physical Review A: Atomic, Molecular and Optical Physics 86, 6(2012) 063422/1-5

Kheifets A, Ivanov I, Bray I
Atomic photoionization: When does it actually begin?
Journal of Physics: Conference Series(online) 388, 3(2012) 1

Serov V, Ivanov I, Kheifets A
Single-photon double ionization of H-2 away from equilibrium: A showcase of two-center electron interference
Physical Review A: Atomic, Molecular and Optical Physics 86, 2(2012) 4

Wallace W, Pullen M, Laban D, Palmer A, Hanne G, Grum-Grzhimailo A, Abeln B, Bartschat K, Weflen D, Ivanov I, Kheifets A, Quiney H, Litvinyuk I, Sang R, Kielpinski D
Above-threshold ionization in atomic hydrogen using intense, few-cycle laser pulses
Journal of Physics: Conference Series(online) 388, 3(2012) 1

Ivanov I
Time delay in strong-field photoionization of a hydrogen atom
Physical Review A: Atomic, Molecular and Optical Physics 83, 2(2011)

Ivanov I, Kheifets A
Complete characterization of double photoionization processes
Physical Review A: Atomic, Molecular and Optical Physics 83, 6(2011) 063411-6

Ivanov I, Kheifets A, Dubau J
On the account of final state correlation in double ionization processes
European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics 61, 3(2011) 563-569

Kheifets A, Ivanov I, Bray I
Timing analysis of two-electron photoemission
Journal of Physics B: Atomic, Molecular and Optical Physics 44, 10(2011) 5

M G P, W C W, Laban D, Palmer A, Hanne G, Grum-Grzhimailo A, Abeln B, Bartschat K, Weflen D, Ivanov I, Kheifets A, Quiney H, Litvinyuk I, Sang R, Kielpinski D
Experimental ionization of atomic hydrogen with few-cycle pulses
Optics Letters 36, 18(2011) 3660-3662

Schuricke M, Zhu G, Steinmann J, Simeonidis K, Ivanov I, Kheifets A, Grum-Grzhimailo A, Bartschat K, Dorn A, Ullrich J
Strong-field ionization of lithium
Physical Review A: Atomic, Molecular and Optical Physics 83, 2(2011) 11

Ivanov I
Modifying the high-energy part of the above-threshold-ionization spectrum
Physical Review A: Atomic, Molecular and Optical Physics 82, 3(2010) 033404, 1-6

Ivanov I, Kheifets A
Atomic systems with one and two active electrons in electromagnetic fields: ionization and high harmonics generation
Journal of Physics: Conference Series(online) 212(2010) 6

Kheifets A, Ivanov I
Delay in Atomic Photoionization
Physical Review Letters 105, 23(2010) 233002-233002

Ivanov I, Kheifets A
Calculation of HHG spectra in complex atoms
Journal of Physics B: Atomic, Molecular and Optical Physics 42, 145601(2009) 1-8

Ivanov I, Kheifets A
Angular anisotropy parameters for sequential two-photon double ionization of helium
Physical Review A: Atomic, Molecular and Optical Physics 79, 023409(2009) 1-7

Ivanov I, Kheifets A
Harmonic generation for atoms in fields of varying ellipticity: Single-active-electron model with Hartree-Fock potential
Physical Review A: Atomic, Molecular and Optical Physics 79, 053827(2009) 1-6

Ivanov I, Kheifets A
Tailoring the waveforms to extend the high-order harmonic generation cutoff
Physical Review A: Atomic, Molecular and Optical Physics 80, 023809(2009) 1-7

Ivanov I, Kheifets A
Above-threshold-ionization structures in photoelectron momentum distributions for single ionization of He by a strong electromagnetic field
Physical Review A: Atomic, Molecular and Optical Physics 80, 063418(2009) 1-7

Ivanov I, Kheifets A
High harmonics generation from excited states of atomic lithium
Journal of Physics B: Atomic, Molecular and Optical Physics 41, 115603(2008) 1-7

Ivanov I, Kheifets A
Perturbative calculation of two-photon double electron ionization of helium
Journal of Physics B: Atomic, Molecular and Optical Physics 41, 095002(2008) 1-9

Ivanov I, Kheifets A
Resonant enhancement of generation of harmonics
Physical Review A: Atomic, Molecular and Optical Physics 78, 053406(2008) 1-9

Ivanov I, Kheifets A
Single-photon double ionization of negative hydrogen ions in the presence of a dc electric field
Physical Review A: Atomic, Molecular and Optical Physics 75(2007) 062701 1-6

Ivanov I, Kheifets A
Two-photon double ionization of helium in the region of photon energies 42-50 eV
Physical Review A: Atomic, Molecular and Optical Physics 75, 033411(2007) 1-6

Kheifets A, Ivanov I, Bray I
Angular anisotropy parameters and recoil-ion momentum distribution in two-photon ionization of helium
Physical Review A: Atomic, Molecular and Optical Physics 76(2007) 025402 1-4

Kheifets A, Ivanov I, Bray I
Convergent close coupling calculations of two-photon double ionization of He
Journal of Physics: Conference Series(online) 88(2007) 012051 1-8

Ivanov I, Kheifets A
Non-perturbative approach to multiphoton ionisation of the hydrogen and helium atoms
Radiation Physics and Chemistry 75(2006) 2102-2104

Ivanov I, Kheifets A
Helium atom in the monochromatic electromagnetic field
European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics 38(2006) 249-255

Ivanov I, Kheifets A
Single-photon double ionization of helium in the presence of dc electric field
Physical Review A: Atomic, Molecular and Optical Physics 74(2006) 042710-1-7

Ivanov I, Kheifets A
Helium atom in presence of DC and AC electric fields
European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics 38(2006) 471-479

Kheifets A, Ivanov I
Convergent close-coupling calculations of two-photon double ionization of helium
Journal of Physics B: Atomic, Molecular and Optical Physics 39(2006) 1731-1742

Ivanov I, Kheifets A
Lippmann-Schwinger Description of Multiphoton Ionization
Physical Review A: Atomic, Molecular and Optical Physics 71, 4(2005) 043405-1-10

Ivanov I, Kheifets A
On the Use of the Kramers-Henneberger Hamiltonian in Multi-photon Ionization Calculations
Journal of Physics B: Atomic, Molecular and Optical Physics 38(2005) 2245-2255

Ivanov I
Transformation of the asymptotic perturbation expansion for the anharmonic oscillator into a convergent expansion
Physics Letters A 322(2004) 194-204

Ivanov I, Ho Y
Complex rotation method for the Dirac Hamiltoniain
Physical Review A: Atomic, Molecular and Optical Physics 69(2004) 023407-1-5

Ivanov I, Ho Y, Ivanov D
SVD as a method of the construction of the antisymmetrized basis functions for a multi-electronatom
Journal of Physics B: Atomic, Molecular and Optical Physics 37(2004) 2519-2527

Ivanov I
Reconstruction of the phase shifts as functions of energy using bound-state energies and low- energy scattering data
Physical Review A: Atomic, Molecular and Optical Physics 67, 3(2003) 032704 1-7

Ivanov I
Asymptotic description of the Rydberg states with L>0 in a two-electron atom
European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics 27(2003) 203-208

Ivanov I, Ho Y
Combined effect of electric field and spin-orbit interaction on doubly excited Feshbach resonance states of helium below the N=2 threshold
Physical Review A: Atomic, Molecular and Optical Physics 68(2003) 033410 1-9

Ivanov I, Mitroy J
Pick-off Annihilation in Positronium Scattering from Alkali-Metal Ions
Physical Review A: Atomic, Molecular and Optical Physics 65(2002) 034709 1-4

Ivanov I, Bromley M, Mitroy J
Asymptotically exact expression for the energies of the 3Se Rydberg series in a two-electron system
Physical Review A: Atomic, Molecular and Optical Physics 66(2002) 042507 1-5

Ivanov I, Bromley M, Mitroy J
Orthogonalising pseudo-potentials in scattering calculations
Computer Physics Communications 152(2002) 9-24

Ivanov I, Mitroy J, Varga K
Positronium-hydrogen scattering using the stochastic variational method
Physical Review A: Atomic, Molecular and Optical Physics 65(2002) 032703 1-8

Mitroy J, Ivanov I
Semi-empirical model of positron scattering and annihilation
Physical Review A: Atomic, Molecular and Optical Physics 65(2002) 042705 1-15

Ivanov I, Ho Y
Supermultiplet structure of the doubly excited positronium negative ion
Nuclear Physics A 684(2001) 672c-674c

Ivanov I, Ho Y
Hylleraas Basis Calculation of the Doubly Excited 1;3Ge States in Heliumlike Ions
Chinese Journal of Physics 39, 5(2001) 415-427

Ivanov I, Mitroy J
Treatment of the Coulomb singularity in momentum space calculations
Computer Physics Communications 134(2001) 317-320

Ivanov I, Mitroy J, Varga K
Elastic Positronium-Atom Scattering Using the Stochastic Variational Method
Physical Review Letters 87, 6(2001) 063201-1-4

Mitroy J, Ivanov I
Quantum defect theory for the study of hadronic atoms
Journal of Physics G: Nuclear and Particle Physics 27(2001) 1421-1433

Mitroy J, Ivanov I
Measuring the positron affinities of atoms: II
Journal of Physics B: Atomic, Molecular and Optical Physics 34(2001) L121-129

Mitroy J, Ivanov I
Positronium scattering from closed shell atoms and ions
Physical Review A: Atomic, Molecular and Optical Physics 65(2001) 012509 1-12

Ho Y, Ivanov I
DC Stark effect for doubly excited Feshbach resonance states of the positronium negative ion below the N=2 threshold of a positronium atom
Physical Review A: Atomic, Molecular and Optical Physics 63(2000) 062503

Ivanov I, Ho Y
High-angular-momentum (L>3) doubly excited resonance states of positronium negative ion
Physical Review A: Atomic, Molecular and Optical Physics 60(2000) 1015

Ivanov I, Ho Y
Electric-field influence on doubly excited Feshbach resonance states of the positronium negative ion below the N=3 threshold of the positronium atom
Physical Review A: Atomic, Molecular and Optical Physics 61(2000) 022510 1-7

Ivanov I, Ho Y
Supermultiplet structure of the doubly excited positronium negative ion
Physical Review A: Atomic, Molecular and Optical Physics 61(2000) 032501 1-9

Ivanov I, Mitroy J
Optical model theory for positron annihilation during scattering
Journal of Physics B: Atomic, Molecular and Optical Physics 33(2000) L831-L837

(91 publications)

Conference paper

Ivanov I, Kheifets A
Transverse electron momentum distribution in strong field ionization: Transition from tunneling to over the barrier ionization regimes
International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2015 ?, ?(2015) 092077 1

Torlina L, Morales F, Kaushal J, Ivanov I, Kheifets A, Zielinski A, Scrinzi A, Muller H, Ivanov M, Smirnova O
Interpreting attoclock measurements of tunnelling times
2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015 ?, ?(2015)

Kheifets A, Ivanov I
Time delay in atomic photoionization with circularly polarized light
28th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2013 488, 3(2014) 1

Torlina L, Moreno F, Kaushal J, Muller H, Ivanov I, Kheifets A, Ivanov M, Smirnova O
Attoclock measurements of strong-field ionization times
High Intensity Lasers and High Field Phenomena, HILAS 2014 ?, ?(2014)

Zhang L, Xie X, Roither S, Zhou Y, Lu P, Liu X, Kartashov D, Schoffler M, Shafir D, Corkum P, Baltuska A, Ivanov I, Kheifets A, Staudte A, Kitzler M
Attosecond spatial control of electron wave packet emission dynamics
19th International Conference on Ultrafast Phenomena, UP 2014 ?, ?(2014)

Pullen M, Wallace W, Laban D, Grum-Grzhimailo A, Palmer A, Hanne G, Abeln B, Bartschat K, Weflen D, Ivanov I, Kheifets A, Quiney H
Carrier-envelope phase effects in few-cycle ionisation of atomic hydrogen
2011 International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011 ?, ?(2011) 197-198

Wallace W, Pullen M, Laban D, Palmer A, Hanne G, Grum-Grzhimailo A, Abeln B, Bartschat K, Weflen D, Ivanov I, Kheifets A, Quiney H, Litvinyuk I, Sang R, Kielpinski D
Above-threshold ionization in atomic hydrogen using intense few-cycle laser pulses
2011 International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011 ?, ?(2011) 2168-2170

(7 publications)

Journal article (non-refereed)

Kheifets A, Ivanov I, Bray I
Erratum: Different escape modes in two-photon double ionization of helium
Physical Review A: Atomic, Molecular and Optical Physics 75(2007) 024702 1-4

(1 publications)