Zobrazeno 1 - 10
of 36
pro vyhledávání: '"T. Tuurnala"'
Autor:
T. Tuurnala, L. Martinot, Guy Demortier, I. Brissaud, M. Mäder, A. Hautojärvi, C. Neelmeijer, Manfred Schreiner, Georges Weber, Thomas Calligaro
Publikováno v:
X-Ray Spectrometry, 29, 2000, pp. 101-110
Conventional pigment analysis of paintings requires the removal of micro-samples followed by the preparation of cross-sections. There are also requirements for investigating several locations within a painting in order to obtain information about dat
Autor:
T Tuurnala, T Majamaa
Publikováno v:
Physica Scripta. :310-311
Thin SiO2 films, which have been fabricated by ultra vacuum plasma oxidation, have been characterised by method based on simple I/V-measurement. Tunnelling current through thin SiO2 film is observed to have a small oscillatory component with high ele
Publikováno v:
Nuclear Physics A. 339:465-476
Nanosecond lifetimes of several states in 147 Nd have been studied using the reaction 146 Nd(d, pγ) 147 Nd with 10 MeV deuterons. The following lifetimes were observed: the 7 2 − level at 49.9 keV, 2.5±0.5 ns; the 5 2 − level at 127.9 keV, ≦
Publikováno v:
Zeitschrift f�r Physik A Atoms and Nuclei. 316:361-366
Decay properties of excited states in the151Nd and155Sm nuclei produced by 10 MeV douterons have been investigated with in-beam gamma-gamma-coincidence equipment during bombardment of the150Nd and154Sm targets. The results largely confirm the data ob
Autor:
T. Tuurnala
Publikováno v:
Zeitschrift für Physik. 268:371-378
To explain the properties of the recently observed negative parity states in the 89-neutron nucleus153Gd, the Nilsson model is extended to include the Coriolis couplings between the 3−/2 [521], 5−/2 [523], 3−/2 [532], 1−/2 [530], 1−/2 [510]
Publikováno v:
Zeitschrift f�r Physik A Atoms and Nuclei. 280:309-316
Theβ −-decay of 66 167 Dy produced through the fast neutron reaction170Er(n, α)167Dy has been investigated by using several kinds of detectors and a high-capacity two-parameter recording system. The half-life andβ −-decay energy of167Dy were d
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 99:307-314
A helium flushed external beam PIXE/PIGE facility for nondestructive multielemental analysis has been developed and tested. By using proton energies Ep≈4.1 MeV and simultaneous detection of X- and gamma-rays, nearly complete analysis of all element
Publikováno v:
Studies in Conservation. 30:93-99
Elemental analysis of pigments by particle induced X-ray and gamma-ray emission (PIXE/PIGE) has been developed for application to paintings. Basic features of these methods have been studied. It is shown that simultaneous use of PIXE and PIGE covers
Publikováno v:
Physica Scripta. 20:125-128
The decays of the isomeric 9/2+ states which have been produced by (d, pγ) and (3He, xnγ) reactions, have been investigated in three N = 89 nuclei. The half-lives have been determined to be 5.1 ± 0.3 ns in 149Nd and 3.5 ± 0.4 μs in 153Gd. In 155
Publikováno v:
Zeitschrift für Physik. 266:103-116
Level structure of the 89-neutron nucleus153Gd has been investigated by studying theEC-decay of isotope-separated153Tb sources with several semiconductor detectors. In addition to singles gamma and electron spectra,γ-γ ande−-γ coincidences were