Recent Submissions

  • Radon-222 measurements at Cape Point : a characterization of a 15-year time series 

    Botha, R.; Labuschagne, C.; Williams, A. G.; Bosman, G.; Brunke, E.-G.; Rossouw, A.; Lindsay, R. (National Association for Clean Air, 2018)
    Radon-222 measurements at Cape Point: A characterization of a 15-year time series The Cape Point (CPT) Global Atmosphere Watch (GAW) research station have been monitoring climatically significant trace ...
  • Vacuum polarization energy of the Shifman–Voloshin soliton 

    Weigel, H.; Graham, N. (Elsevier, 2018)
    We compute the vacuum polarization energy of soliton configurations in a model with two scalar fields in one space dimension using spectral methods. The second field represents an extension of the conventional ϕ4 kink ...
  • Spin symmetry in the Dirac sea derived from the bare nucleon–nucleon interaction 

    Shen, Shihang; Liang, Haozhao; Meng, Jie; Ring, Peter; Zhang, Shuangquan (Elsevier, 2018)
    The spin symmetry in the Dirac sea has been investigated with relativistic Brueckner–Hartree–Fock theory using the bare nucleon–nucleon interaction. Taking the nucleus 16O as an example and comparing the theoretical results ...
  • Effects of tensor forces in nuclear spin–orbit splittings from ab initio calculations 

    Shen, Shihang; Liang, Haozhao; Meng, Jie; Ring, Peter; Zhang, Shuangquan (Elsevier, 2018)
    A systematic and specific pattern due to the effects of the tensor forces is found in the evolution of spin–orbit splittings in neutron drops. This result is obtained from relativistic Brueckner–Hartree–Fock theory using ...
  • Multiple chiral doublets in four-j shells particle rotor model : five possible chiral doublets in ¹³⁶₆₀Nd₇₆ 

    Chen, Q. B.; Lv, B. F.; Petrache, C. M.; Meng, Jie (Elsevier, 2018)
    A particle rotor model, which couples nucleons in four single-jshells to a triaxial rotor core, is developed to investigate the five pairs of nearly degenerate doublet bands recently reported in the even-even nucleus 136Nd. ...
  • Wavelet signatures of K-splitting of the Isoscalar Giant Quadrupole Resonance in deformed nuclei from high-resolution (p, p ) scattering off ¹⁴⁶,¹⁴⁸,¹⁵⁰Nd 

    Kureba, C. O.; Buthelezi, Z.; Carter, J.; Cooper, G. R. J.; Fearick, R. W.; Fortsch, S. V.; Jingo, M.; Kleinig, W.; Krugmann, A.; Krumbolz, A. M.; Kvasil, J.; Mabiala, Justin; Mira, J. P.; Nesterenko, V. O.; Von Neumann-Cosel, P.; Neveling, R.; Papka, P.; Reinhard, P. G.; Richter, A.; Sideras-Haddad, E.; Smit, F. D.; Steync, G. F.; Swartz, J. A.; Tamii, A.; Usman, I. T. (Elsevier, 2018)
    The phenomenon of fine structure of the Isoscalar Giant Quadrupole Resonance (ISGQR) has been studied with high energy-resolution proton inelastic scattering at iThemba LABS in the chain of stable even-mass Nd isotopes ...
  • Chiral geometry and rotational structure for ¹³⁰Cs in the projected shell model 

    Chen, F. Q.; Meng, Jie; Zhang, S. Q. (Elsevier, 2018)
    The projected shell model with configuration mixing for nuclear chirality is developed and applied to the observed rotational bands in the chiral nucleus 130Cs. For the chiral bands, the energy spectra and electromagnetic ...
  • Neutron-rich nuclei produced at zero degrees in damped collisions induced by a beam of ¹⁸O on a ²³⁸U target 

    Stefan, I.; Fornal, B.; Leoni, S.; Azaiez, F.; Portail, C.; Thomas, J. C.; Karpovi, A. V.; Ackermann, D.; Bednarczyk, P.; Blumenfeld, Y.; Calinescu, S.; Chbihi, A.; Ciemala, M.; Cieplicka-Orynczak, N.; Crespi, F. C. L.; Franchoo, S.; Hammache, F.; Iskr, L. W.; Jacquote, B.; Janssens, R. V. F.; Kamalou, O.; Lewitowicz, M.; Olivier, L.; Lukyanov, S. M.; Maccormick, M.; Maj, A.; Marini, P.; Matea, I; Naumenko, M. A.; De Oliveira Santos, F.; Petrone, C.; Penionzhkevich, Yu E.; Rotaru, F.; Savajols, H.; Sorline, O.; Stanoiu, M.; Szpak, B.; Tarasov, O. B.; Verney, D. (Elsevier, 2018)
    Cross sections and corresponding momentum distributions have been measured for the first time at zero degrees for the exotic nuclei obtained from a beam of 18O at 8.5 MeV/A impinging on a 1 mg/cm2238U target. Sizable cross ...
  • Deformation dependence of the isovector giant dipole resonance : the neodymium isotopic chain revisited 

    Donaldson, L. M.; Bertulani, C. A.; Carter, J.; Nesterenko, V. O.; Von Neumann-Cosel, P.; Neveling, R.; Ponomarev, V. Yu; Reinhard, P. G.; Usman, I. T.; Adsley, P.; Brummer, J. W.; Buthelezi, E. Z.; Cooper, G. R. J.; Fearick, R. W.; Fortsch, S. V.; Fujita, H.; Fujita, Y.; Jingo, M.; Kleinig, W.; Kureba, C. O.; Kvasil, J.; Latif, M.; Li, K. C. W.; Mira, J. P.; Nemulodi, F.; Papka, P.; Pellegri, L.; Pietralla, N.; Richter, A.; Sideras-Haddad, E.; Smit, F. D.; Steyn, G. F.; Swartz, J. A.; Tamii, A. (Elsevier, 2018)
    Proton inelastic scattering experiments at energy Ep=200MeV and a spectrometer scattering angle of 0° were performed on 144,146,148,150Nd and 152Sm exciting the IsoVector Giant Dipole Resonance (IVGDR). Comparison with ...
  • Investigation of four carbon monoxide isotopomers in natural abundance by laser-induced fluorescence in a supersonic jet 

    Du Plessis, Anton; Rohwer, Erich G.; Steenkamp, Christine M. (Elsevier, 2007)
    The four carbon monoxide (CO) isotopomers 12C16O, 13C16O, 12C18O and 12C17O have been detected simultaneously in a CO gas sample of natural isotopic abundance by measuring rovibronic excitation spectra of six vibronic bands ...
  • Accurate Laboratory Wavelengths of the A1Π(υ' = 0-5)-X1Σ+(υ'' = 0) Vibronic Bands of 12C17O and 12C18O 

    Du Plessis, Anton; Rohwer, Erich G.; Steenkamp, Christine M. (IOP Science, 2006)
    Twenty nine rovibronic lines of 12C17O for which laboratory wavelengths were previously unavailable were detected in laser-induced fluorescence excitation spectra of the six vibronic bands A1Π(υ' = 0-5)-X1Σ+(υ'' = 0). ...
  • Accurate laboratory wavelengths of the e 3 Σ–(ν' = 5) – X 1 Σ+(ν'' = 0) band of 12C16O 

    Dickenson, G. D.; Nortje, A. C.; Steenkamp, C. M.; Rohwer, E. G.; Du Plessis, A. (IOP Science, 2010)
    The forbidden singlet-triplet transitions of carbon monoxide (CO) are important in the interpretation of vacuum ultraviolet interstellar absorption spectra and in particular for the measurement of large CO column densities. ...
  • Free charge carrier absorption in silicon at 800 nm 

    Heisel, P.-C.; Ndebeka, W. I.; Neethling, P. H.; Paa, W.; Rohwer, E. G.; Steenkamp, C. M.; Stafast, H. (Springer, 2016)
    The transmission of a Ti:sapphire laser beam (c.w. and fs pulsed operation at 800 nm) through a 10-μm-thin oxidized silicon membrane at 45° angle of incidence at first increases with the incident laser power, then shows a ...
  • Understanding the chiral geometry with K-Plot and Azimuthal-Plot 

    Chen, F. Q.; Meng, Jie (Jagellonian University, 2018)
    The chiral geometry of the angular momentum in the intrinsic frame is extracted from angular momentum projected wave functions in the laboratory frame by the K-Plot and Azimuthal-Plot. The method is demonstrated by an ...
  • Near-degenerate rotational bands in the Tl isotopes 

    Lawrie, E. A.; Ndayishimye, J.; Masiteng, P. L.; Shirinda, O. (Jagellonian University, 2018)
    Sets of near-degenerate rotational bands built on configurations involving nh9/2 particle and vi13/2 holes were observed in the neighbouring 193;194Tl isotopes. Such sets of bands, involving particle and hole configurations and ...
  • Multiple chiral bands built on the same many-particle nucleon configuration In the 100 mass region 

    Shirinda, O.; Lawrie, E. A. (Jagellonian University, 2018)
    Multi-particle-plus-triaxial-rotor (MPR) model calculations were performed for chiral partner bands associated with the multi-particle πg¯¹9/2⊗ vh²11/2 nucleon configuration in the 100 mass region. Multiple chiral ...
  • Dynamical critical scaling of long-range interacting quantum magnets 

    Defenu, Nicolo; Enss, Tilman; Kastner, Michael; Morigi, Giovanna (American Physical Society, 2018)
    Slow quenches of the magnetic field across the paramagnetic-ferromagnetic phase transition of spin systems produce heat. In systems with short-range interactions the heat exhibits universal power-law scaling as a function ...
  • Spectral methods for coupled channels with a mass gap 

    Weigel, H.; Quandt, M.; Graham, N. (American Physical Society, 2018)
    We develop a method to compute the vacuum polarization energy for coupled scalar fields with different masses scattering off a background potential in one space dimension. As an example we consider the vacuum polarization ...
  • Classical dynamics on three-dimensional fuzzy space 

    Scholtz, F. G. (American Physical Society, 2018)
    We derive the path integral action for a particle moving in three-dimensional fuzzy space. From this we extract the classical equations of motion. These equations have rather surprising and unconventional features: they ...
  • Anomalous scaling of dynamical large deviations 

    Nickelsen, Daniel; Touchette, Hugo (American Physical Society, 2018)
    The typical values and fluctuations of time-integrated observables of nonequilibrium processes driven in steady states are known to be characterized by large deviation functions, generalizing the entropy and free energy ...

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