[en] Energy levels, spins and parities of S 38, S 39, Cl 39, Ti 42 and Ti 43 were determined according to shell mode calculations. Good agreement between the calculated values and the experimental data for Cl 39, Ti 42 and Ti 43 is obtained. No experimental information about S 39 is available. For S 38 and S 39 the proposed energy level schemes are given. (orig.)

[en] A 4π-spectrometer of light charged particles, named 8πLP, is in operation at the Legnaro National Laboratory (Italy) for studying mechanisms of heavy ions production during low-energy reactions. The spectrometer has been used recently for analysis of fission dynamics, which involved transfer of light charged particles to fission and to the channel of residue evaporation in the system of intermediate fissionability and study of multinucleon transfer to heavy target. Data on the system 240 MeV ³²S + ¹⁰⁰Mo are provided. Dynamic effects stemming from comparison of the data with statistical model of calculations are discussed

[en] The dose-rate dependence of commercially available diode detectors was measured under both high instantaneous dose-rate (pulsed) and low dose rate (continuous, Co-60) radiation. The dose-rate dependence was measured in an acrylic miniphantom at a 5-cm depth in a 10x10 cm² collimator setting, by varying source-to-detector distance (SDD) between at least 80 and 200 cm. The ratio of a normalized diode reading to a normalized ion chamber reading (both at SDD=100 cm) was used to determine diode sensitivity ratio for pulsed and continuous radiation at different SDD. The inverse of the diode sensitivity ratio is defined as the SDD correction factor (SDD CF). The diode sensitivity ratio increased with increasing instantaneous dose rate (or decreasing SDD). The ratio of diode sensitivity, normalized to 4000 cGy/s, varied between 0.988 (1490 cGy/s)-1.023 (38 900 cGy/s) for unirradiated n-type Isorad Gold, 0.981 (1460 cGy/s)-1.026 (39 060 cGy/s) for unirradiated QED Red (n type), 0.972 (1490 cGy/s)-1.068 (38 900 cGy/s) for preirradiated Isorad Red (n type), 0.985 (1490 cGy/s)-1.012 (38 990 cGy/s) for n-type Pt-doped Isorad-3 Gold, 0.995 (1450 cGy/s)-1.020 (21 870 cGy/s) for n-type Veridose Green, 0.978 (1450 cGy/s)-1.066 (21 870 cGy/s) for preirradiated Isorad-p Red, 0.994 (1540 cGy/s)-1.028 (17 870 cGy/s) for p-type preirradiated QED, 0.998 (1450 cGy/s)-1.003 (21 870 cGy/s) for the p-type preirradiated Scanditronix EDP20^3G, and 0.998 (1490 cGy/s)-1.015 (38 880 cGy/s) for Scanditronix EDP10^3G diodes. The p-type diodes do not always show less dose-rate dependence than the n-type diodes. Preirradiation does not always reduce diode dose-rate dependence. A comparison between the SDD dependence measured at the surface of a full scatter phantom and that in a miniphantom was made. Using a direct adjustment of radiation pulse height, we concluded that the SDD dependence of diode sensitivity can be explained by the instantaneous dose-rate dependence if sufficient buildup is provided to eliminate electron contamination. An energy independent empirical formula was proposed to fit the dose-rate dependence of diode sensitivity

No abstract available

[en] The structure of ^35,37,39S isotopes is described by performing comprehensive shell model calculations with SDPF-U and SDPFMW interactions. Protons and neutrons are restricted to the sd-shell for $N<20$, neutrons start to fill the pf-shell for $N>20$. Natural parity states are described by only in-shell mixing, unnatural parity states with 1p–1h inter-shell neutron excitations. With SDPF-U interaction, reported are the results for natural parity states only because this interaction is not suitable for cross shell excitations. Calculated energy levels, electromagnetic properties and spectroscopic factors are in good agreement with the recently available experimental data.

[en] This article reviews the development and summarizes the state-of-the-art in absorbed dose calorimetry for all the common clinical beam modalities covered in reference dosimetry codes of practice, as well as for small and nonstandard fields, and brachytherapy. It focuses primarily on work performed in the last ten years by national laboratories and research institutions and is not restricted to primary standard instruments. The most recent absorbed dose calorimetry review article was published over twenty years ago by Ross and Klassen (1996 Phys. Med. Biol. 41 1–29), and even then, its scope was limited to water calorimeters. Since the application of calorimetry to the measurement of radiation has a long and often overlooked history, a brief introduction into its origins is provided, along with a summary of some of the landmark research that have shaped the current landscape of absorbed dose calorimeters. Technical descriptions of water and graphite calorimetry are kept general, as these have been detailed extensively in relatively recent review articles (e.g. McEwen and DuSautoy (2009 Metrologia 46 S59–79) and Seuntjens and Duane (2009 Metrologia 46 S39–58). The review categorizes calorimeters by the radiation type for which they are applied; from the widely established standards for Co-60 and high-energy x-rays, to the prototype calorimeters used in high-energy electrons and hadron therapy. In each case, focus is placed on the issues and constraints affecting dose measurement in that beam type, and the innovations developed to meet these requirements. For photons, electrons, proton and carbon ion beams, a summary of the ionization chamber beam quality conversion factors (k _Q) determined using said calorimeters is also provided. The article closes with a look forward to some of the most promising new techniques and areas of research and speculates about the future clinical role of absorbed dose calorimetry. (topical review)

[en] Shell-model calculations are performed for the odd- and even-parity states of ³⁹Cl and the odd-parity states of ³⁹S. The ³⁹S odd-parity states and the ³⁹Cl even-parity states were considered in full (1s,0d)²⁰(0f,1p)³ and (1s,0d)²¹(0f,1p)² configurational spaces, respectively. For the ³⁹Cl odd-parity states it was necessary to use a highly truncated (1s,0d)²⁰(0f,1p)³ configurational space. The method and results of truncation are discussed in some detail. Observables calculated include energy spectra, binding energies, ⁴⁰Ar→³⁹Cl+p spectroscopic factors, first-forbidden and allowed β^- decay of ³⁹S, and γ transitions in both ³⁹S and ³⁹Cl. Results are compared to experiment. For example, the spectroscopic factors for 1/2⁺ and 3/2⁺³⁹Cl states and the γ transitions between the even-parity ³⁹Cl states are predicted with high accuracy while the half-life of ³⁹S is calculated to be 5.6 s (if the spin-parity of ³⁹S has the preferred value of 7/2^-) as compared to the experimental value of 11.5±0.5 s

[en] Er³⁺ doped Y₂O₃ and Nb₂O₅ modified germanate glasses have been reported which possesses excellent thermal stability. Near infrared emission characteristics upon excitation of a conventional 980 nm laser diode have been investigated. According to absorption spectra and refractive index, Judd–Ofelt intensity parameters, spontaneous radiative transition probabilities, radiative lifetimes and stimulated emission cross sections have been calculated and discussed. These results indicate that the predicted spontaneous transition probability and emission cross section of Er³⁺:⁴I_13/2→⁴I_15/2 transition in developed glasses can reach as large as 192.39 s⁻¹ and 7.14×10⁻²¹ cm², respectively. Hence, germanate glasses with superior performances might be a useful material for applications in optical amplifiers around 1.53 μm. - Highlights: • Er³⁺ doped Y₂O₃ and Nb₂O₅ modified germanate glasses were prepared. • The thermal stability and spectra properties were investigated. • The developed glasses possessed superior stability. • The stimulated emission cross-sections were calculated and discussed

No abstract available

[en] Nuclear spectroscopic information for the known nuclides of mass 39 (Mg,Al,Si,P,S,Cl,Ar,K,Ca,Sc,Ti) has been evaluated. The principal sources of the 'adopted levels' presented are Endt's evaluations (1990En08, 1978En02). The data sets for reactions and decays, including all available gamma-ray data, are based mostly on the original literature. There are no data available for the excited states in ³⁹Mg, ³⁹Al, ³⁹Si and ³⁹Ti