1. T. Urbańczyk, J. Sobczuk and J. Koperski, "Rotational characterization of the E3Σ1+(5s6s3S1) Rydberg state of CdNe van der Waals complex via selective J-excitation in OODR process", Spectrochim. Acta A: Mol. Biomol. Spectrosc. 264 (2022) 120248 (link)
  2. D. Horwat, M. Krośnicki, T. Urbańczyk, J. Koperski, "Deep neural network for fitting analytical potential energy curve of diatomic molecules from ro-vibrational spectra", Mol. Simulat. 47 (2021) 650-658 (link)
  3. T. Urbańczyk, M. Krośnicki and J. Koperski, "Observation of gerade Rydberg state of Cd2 van der Waals complex cooled in free-jet expansion beam and excited using opticaloptical double resonance method", Spectrochim. Acta A: Mol. Biomol. Spectrosc. 253 (2021) 119500 (link)
  4. T. Urbańczyk, J. Koperski "Genetic Algorithm for quick finding of diatomic molecule potential parameters", Mol. Simulat. 46 (2020) 1073-1083 (link)
  5. J. Dudek, A. Kędziorski, J.P. Zobel, M. Krośnicki,T. Urbańczyk, K. Puczka, J. Koperski "Bound→free and bound→bound multichannel emission spectra from selectively excited Rydberg states in the ZnAr and CdAr van der Waals complexes", J. Mol. Struct. 1222 (2020), 128840 (link)
  6. T. Urbańczyk, J. Koperski "Ro-vibrational cooling of diatomic molecules Cd2 and Yb2: rotational energy structure included", Mol. Phys. 118 (2020), e1694712  (link)
  7. J. Dudek, K. Puczka, T. Urbańczyk, J. Koperski  "High-temperature continuous molecular beam source for aggressive elements: an example of zinc", Rev. Sci. Instrum. 90 (2019), 115109 (link)
  8. T.Urbańczyk, J.Koperski  "Spectroscopy of CdKr van der Waals complex using OODR process: New determination of the E3Σ1+ (5s6s3S1)  Rydberg state potential", Chem. Phys. 525 (2019), 110406, (link)
  9. M. Krośnicki, A. Kędziorski, T. Urbańczyk, J. Koperski "Rydberg states of the CdAr van der Waals complex", Phys. Rev. A 99 (2019), 052510 (link)
  10. T.Urbańczyk, J.Dudek, J.Koperski "Isotopologue-selective excitation studied via optical-optical double resonance using the E3Σ1+(63S1)←A3Π0+(53P1)←X1Σ0+(51S0) transitions in CdAr and CdKr van der Waals complexes", J. Quant. Spectrosc. Radiat. Transf. 212 (2018), 32-38 (Science Direct)
  11. T. Urbańczyk, M. Strojecki, J. Koperski "Exploration of the molecular ro-vibrational energy structure: on the perspective of Yb2 and Cd2 internal cooling, and 171Yb-version of Einstein–Podolsky–Rosen experiment", Mol. Phys. 116 (2018), 23-24 link
  12. T. Urbańczyk, M. Krośnicki, A. Kędziorski, J. Koperski "The E3Σ1+ (63S1) ← A3Π0+(53P1) transition in CdAr revisited: The spectrum and new analysis of the E3Σ1+ Rydberg state interatomic potential", Spectrochim. Acta A: Mol. Biomol. Spectrosc.196 (2018), 1386 (Science Direct)
  13. T. Urbańczyk, J. Koperski "Neural networks and determination of diatomic molecule interatomic potential of cadmium dimer", Spectrochim. Acta A: Mol. Biomol. Spectrosc. 189 (2018), 502 (Science Direct)
  14. T. Urbańczyk, J. Koperski, A. Pashov "The ambiguity in determination of interatomic potential of diatomic molecule", Journal of Physics: Conf. Series 810 (2017), 012041 (link)
  15. T. Urbańczyk, M. Krośnicki, M. Strojecki, A. Pashov, A. Kędziorski, P. Żuchowski, J. Koperski "Interatomic potentials of van der Waals dimers Hg2 and Cd2: Probing discrepancies between theory and experiment", Journal of Physics: Conf. Series, 810 (2017), 012018 (link)
  16. T. Urbańczyk, M. Krośnicki, M. Strojecki, A. Pashov, A. Kędziorski, P. Żuchowski, J. Koperski "Interatomic potentials of metal dimers: probing agreement between experiment and advanced ab initio calculations for van der Waals dimer Cd2", Int. Rev. Phys. Chem. 36 (2017), 541(link)
  17. T. Urbanczyk, J. Koperski, A. Pashov  "Determination of interatomic potentials for diatomic molecules from low resolution spectra", J. Mol. Spectrosc, 330 (2016) 165-169 (Science Direct)
  18. T. Urbańczyk, J. Koperski "Rotational profiles in the excitation spectrum recorded for the B31(53P1) ← X10+(51S0) transition in CdNe van der Waals complex", Chem. Phys. Lett., 644 (2016), 231-234 (Science Direct)
  19. T. Urbańczyk, J. Koperski "The E3Σ+(63S1)-state interatomic potential of CdAr in the long range region revisited: A new method for bond length adjustment", Chem. Phys. Lett., 640 (2015), 82-86 (Science Direct)
  20. M. Krośnicki, M. Strojecki, T. Urbańczyk, A. Pashov, J. Koperski "Interatomic potentials of the heavy van der Waals dimer Hg2: A “test-bed” for theory-to-experiment agreement",  Physics Reports, 591 (2015) (Science Direct)
  21. T. Urbanczyk; J. Koperski "Profiles of (υ′;υ″ = 0) bands recorded in excitation spectra using b30+u ← X10g+ transitions in Cd2 and B31 ← X10+ transitions in CdAr", Mol. Phys, 112 (2014) (link).
  22.  T. Urbańczyk, J. Koperski "Rotational profiles of vibrational bands recorded at the B31(53P1)←X10+(51S0) transition in CdAr complex", Chem. Phys. Lett. 591 (2014) 64-68 (Science Direct)
  23. J. Koperski, T. Urbańczyk, M. Krośnicki, M. Strojecki "Free ← bound and bound ← bound profiles in excitation spectra of the B31 ← X10+ transition in CdNg (Ng = noble gas) complexes" Chem. Phys. 428 (2014) 43-52 (Science Direct)
  24. T. Urbańczyk, J. Koperski "Pulsed supersonic source of vdW complexes for high-temperature applications: Spectroscopy and beam characteristics" Eur. Phys. J. Special Topics 222, 2187-2195 (2013) (link)
  25. J. Koperski "From molecular spectroscopy to entanglement of atoms – a trek with supersonic velocity" Opt. Appl. 42, 417 (2012) (link)
  26. T. Urbańczyk, J. Koperski "High-temperature high-pressur eall-metal pulsed source of van der Waals dimers:Towards the Einstein-Podolsky-Rosen experiment " Rev. Sci. Instrum. 83, 083114 (2012) (link)
  27. T. Urbańczyk, M. Strojecki, M. Krośnicki, J. Koperski "Entangled cadmium atoms – from the method of production to the test of Bell inequalities" Opt. Appl. 42, 433 (2012) (link)
  28. J. Koperski, M. Strojecki, M. Krośnicki, and T. Urbańczyk „Potentials of the D10u+ (61S0) and F31u(63P2) Electronic Rydberg States of Cd2 from ab Initio Calculations and Laser-Induced Fluorescence Excitation Spectra” J. Phys. Chem. A, 2011, 115 (25), pp 6851–6860 (link)
  29. T. Urbańczyk, M. Strojecki, J. Koperski, "Structure of vibrational bands of the E3Σ+(63S1) ←A3Π0+(53P1), B3Σ1+(53P1) transitions in CdAr and CdKr studied by optical-optical double resonance method", Chem. Phys. Lett., 503 (2011) 18-24, (Science Direct ).
  30. M. Strojecki, M. Krośnicki, P. Zgoda, J. Koperski, "Characterization of bound parts of the b30u+ (53P1), c31u (53P2) and X10g+ states of Cd2 revisited: Bound–bound excitation and dispersed emission spectra", Chem. Phys. Lett., 489 (2010) 20-24, (Science Direct).
  31. M. Strojecki, J. Koperski, "LIF dispersed emission spectra and characterization of ZnRg (Rg=Ne, Ar, Kr) ground-state potentials", Chem. Phys. Lett. 479 (2009) 189-194 (Science Direct).
  32. M. Strojecki, M. Krośnicki, J. Koperski, "Repulsive and bound parts of the interatomic potentials of the lowest singlet electronic energy states of the MeRg complexes (Me=Zn, Cd; Rg=He, Ne, Ar, Kr, Xe)", J. Mol. Spectrosc. 256 (2009) 128-134 (Science Direct).
  33. M. Strojecki, M. Krośnicki, M. Łukomski and J. Koperski, "Excitation spectra of CdRg (Rg=He, Ne, Xe) complexes recorded at the D1Σ0+ ← X1Σ0+ transition: from the heaviest CdXe to the lightest CdHe", Chem. Phys. Lett. 471 (2009) 29-35 (Science Direct).
  34. M. Ruszczak, M. Strojecki, M. Łukomski, J. Koperski "Potential of the B11u state and short-range branch of the X10g+ state of cadmium dimer determined from excitation and fluorescence spectra recorded at the B11u←X10g+ transition", J. Phys. B: At. Mol. Opt. Phys. 41 (2008) 245101 (IOPscience)
  35. M. Strojecki, M. Krośnicki and J. Koperski, "Short-range repulsion in the D1Σ0+ -state potential of the ZnRg (Rg = Ne, Ar, Kr) complexes determined from a direct free ← bound excitation at the D1Σ0+ ← X1Σ0+ transition", Chem. Phys. Lett. 465 (2008) 25-30 (Science Direct)
  36. M. Strojecki, M. Ruszczak, M. Łukomski, J. Koperski "Is cadmium dimer truly a van der Waals molecule?: Analysis of rotational profiles recorded at the A10u+ , B11u←X10g+ transitions", Chem. Phys. 340 (2007) 171-180 (Science Direct)
  37. J. Koperski, M. Ruszczak, M. Strojecki, M. Łukomski, "Spectroscopy of the 11u(51P1) and 10 u+ (51P1) singlet electronic states of cadmium dimer: Bond lengths and verification of ab initio potentials", J. Mol. Spectrosc. 243 (2007) 134-141 (Science Direct)
  38. M. Czajkowski, W. Kedzierski and J. Koperski, "Interatomic potential parameters of CdHe van der Waals complex derived from excitation spectrum of the C11(51P1)←X10+(51S0) vibrational transition", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.), 67 (2007) 730-736 (Science Direct)
  39. J. Koperski, "Group-12 vdW dimers in free-jet supersonic beams - the legacy of Eugeniusz Czuchaj continues", Eur. Phys. J. - Special Topics 144 (2007) 107-114 (Science Direct)
  40. M. Łukomski, M. Strojecki, M. Ruszczak and J. Koperski, "Rotational structure of the υ′ = 45 ← υ ″ = 0 band of the 10u+ (51P1)←X10g+ transition in Cd2: direct determination of the ground- and excited-state bond lengths", Chem. Phys. Lett. 434 (2007) 171-175 (Science Direct); Erratum, ibid. 436 (2007), 400 (Science Direct).
  41. J. Koperski, E.S. Fry, "Molecules in the cold environment of a supersonic free-jet beam: from spectroscopy of neutral-neutral interactions to test of Bell's inequality", J. Phys. B: At. Mol. Opt. Phys. 39 (2006) 1125-1150, special issue on Cold Molecules (IOPscience)
  42. M. Strojecki, M. Ruszczak, M. Krośnicki, M. Łukomski and J. Koperski, "The 30u+ (43P1) -state potential of Zn2 obtained from excitation spectrum recorded at the 30u+ ←X10g+ transition", Chem. Phys. 327 (2006) 229-236 (Science Direct)
  43. M. Ruszczak, M. Strojecki, M. Krośnicki, M. Łukomski and J. Koperski, "Spectroscopy of Cd2 and Zn2 molecules in free-jet supersonic beams. Experimental and theoretical studies", Opt. Appl. 36 (2006) 451-459 (link)
  44. M. Ruszczak, M. Strojecki, and J. Koperski, "Short-range repulsion in the D10+(1Σ+)-state potential of the CdRG (RG=Ar, Kr) molecules determined from direct continuum←bound excitation detected at the D10+←X10+(1Σ+) transition", Chem. Phys. Lett. 416 (2005) 147-151 (Science Direct)
  45. J. Koperski, "Ground and excited-state potentials of the 12-group metal-dimers. Covalent admixture to van der Waals bonding in Cd2 and Hg2", in Trends in Applied Spectroscopy, Vol. 5, Transworld Research Network, Kerala, India, 2005, pp. 225-246 (Transworld Research Network)
  46. M. Łukomski, M. Ruszczak, E. Czuchaj and J. Koperski, "Evidence of a weak dipole transition moment between the 31u(53P1) and X10g+ electronic energy states in Cd2", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 61 (2005) 1835-1840 (Science Direct)
  47. J. Koperski and M. Czajkowski, "Electronic structure of the lowest Rydberg state of CdKr determined from laser-excitation spectra using supersonic beam and double optical resonance methods", Phys. Rev. A 69 (2004) 042509 (9 pages) (Physical Review Archive)
  48. M. Łukomski and J. Koperski, "Nuclear-spin intensity alternation and rotational-levels symmetry properties in isotopically-resolved excitation spectrum of Cd2", Chem. Phys. Lett. 384 (2004) 317-319 (Science Direct)
  49. M. Łukomski, J. Koperski, E. Czuchaj and M. Czajkowski, "Structure of excitation and fluorescence spectra recorded at the 10u+ (51P1) - X10g+ transition of Cd2", Phys. Rev. A 68 (2003) 042508 (13 pages) (Physical Review Archive); "Erratum", ibid. 69 (2004) 049901(E) (Physical Review Archive)
  50. J. Koperski and M. Czajkowski, "The structure of the lowest electronic Rydberg state of CdAr complex determined by laser double resonance method in a supersonic jet-expansion beam", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 59 (2003) 2435-2448 (Science Direct)
  51. J. Koperski, "Study of diatomic van der Waals complexes in supersonic beams", Phys. Reports 369 (2002) 177-326 (Science Direct)
  52. J. Koperski, M. Łukomski and M. Czajkowski, "Laser spectroscopy of CdKr molecule in ultraviolet region", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 58 (2002) 2709-2724 (Science Direct)
  53. J. Koperski and M. Czajkowski, "Short-range characterization of the MeAr (Me=Zn,Cd) ground-state potentials from fluorescence spectra", J. Mol. Spectrosc. 212 (2002) 162-170 (Science Direct)
  54. M. Łukomski, J. Koperski and M. Czajkowski, "Double-well potential energy curve of cadmium-krypton molecule in the B1(53P1) state", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 58 (2002) 1757-1767 (Science Direct)
  55. J. Koperski and M. Czajkowski, "Spectroscopical characterization of CdNe van der Waals complex in the E1(3Σ+) Rydberg state", Chem. Phys. Lett. 357 (2002) 119-125 (Science Direct)
  56. J. Koperski, M. Łukomski and M.Czajkowski, "Laser excitation spectrum and spectroscopic potential parameters of Cd2 molecule in the 1u(53P2) energy state", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 58 (2002) 927-932 (Science Direct)
  57. J. Koperski, "Laser-spectroscopic characterization of diatomic van der Waals complexes produced in supersonic expansion beams", Wydawnictwo Uniwersytetu Jagiellońskiego, Kraków 2001 (Rozprawy Habilitacyjne Nr 356) (in English) (Wydawnictwo UJ)
  58. J. Koperski and M. Czajkowski, "Interatomic potential parameters of CdHe van der Waals complex in the A30+, B31 and X10+ states - revisited", Chem. Phys.Lett. 350 (2001) 367-371 (Science Direct)
  59. J. Koperski and M. Czajkowski, "Spectroscopic Characterization of ZnNe van der Waals Molecule in the X0+(41S0) and D1(41P1) Energy States", Phys. Rev. A 62 (2000) 012505 (9 pages) (Physical Review Archive)
  60. J. Koperski, J. B. Atkinson and L. Krause, "Determination of interatomic potentials for the X0+ A0+, and B1 states of HgKr from fluorescence and excitation spectra", J. Mol. Spectrosc., 207 (2001) 172-188 (Science Direct)
  61. J. Koperski and M. Czajkowski, "Improved spectroscopic characterization of the ground X0+(51S0),and lowest excited A0+(53P1), B1(53P1) and D1(51P1) energy states of CdNe complex", Eur. Phys. J. D 10 (2000) 363-377 (SpingerLink)
  62. J. Koperski, S. Kiełbasa and M. Czajkowski, "Interatomic Potential of B1(3S+) and X0+(1S+) States Based on a Near-Dissociation Expansion of the Cadmium-Argon Molecules", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 56 (2000) 1613-1626 (science Direct)
  63. M. Czajkowski and J. Koperski, "The Cd2 and Zn2 van der Waals dimers revisited. Corrections for some molecular potential parameters", Spectrochim. Acta (Part A - Mol. Biomol. Spectr.) 55 (1999) 2221-2229 (Science Direct)
  64. J. Koperski and M. Czajkowski, "Excitation spectrum of the A0+(53P1), B1(53P1)←X0+(51S0) transitions in the CdHe van der Waals molecule. Spectroscopic characterization of the X0+, A0+ and B1 electronic energy states", J. Chem. Phys. 109 (1998) 459-465 (Journal of Chemical Physics)
  65. J. Koperski, J. B. Atkinson and L. Krause, "First observations of laser-excited Hg3 and Hg2RG spectra in a supersonic expansion beam", J. Mol. Spectrosc. 187 (1998) 181-192 (Science Direct)
  66. J. Koperski, J.B. Atkinson and L. Krause, "The G0u+ (61P1)-X0g+ Excitation and Fluorescence Spectra of Hg2 Excited in a Supersonic Jet", J. Mol. Spectrosc. 184 (1997) 300-308 (Science Direct)
  67. J. Koperski, "Long-Range Potential of B1(3S+) State Based on a Near-Dissociation Expansion of the Mercury-Argon Molecules". J. Chem. Phys. 105 (1996) 4920-4922 (Journal of Chemical Physics)
  68. J. Koperski, "Potential Energy Curve of the X0+(1S) Ground State of HgAr Determined from the A0+(3P)←X0+ and B1(3S)→X0+ Fluorescence Spectra". Chem. Phys. 211 (1996) 191-201 (Science Direct); "Erratum", ibid. 214 (1997) 431-432 (Science Direct)
  69. J. Koperski, J.B. Atkinson and L. Krause, "Molecular Beam Spectroscopy of the 1u(63P2)-X0g+ and 1u(63P1)-X0g+ Transitions in Hg2", Can. J. Phys. (Herzberg Issue) 72 (1994) 1070-1077. (Canadian Journal of Physics)
  70. J. Koperski, J.B. Atkinson and L. Krause,"Spectroscopy of the A0+ and B1 States in HgAr and HgNe". Chem. Phys. 186 (1994) 401-407 (Science Direct)
  71. J. Koperski, J.B. Atkinson and L. Krause, "The 0u+ (63P1)-X0g+ Spectrum of Hg2 Excited in a Supersonic Jet".Chem. Phys. Lett. 219 (1994) 161-168 (Science Direct)