[en] The SATURNE synchrotron facility is now equipped with a polarized Lithium-6 ion source for nuclear physics experiments. The source is an arrangement of a conventional polarized atomic beam and an ionizer injecting the Li¹⁺ ions into the Saturne EBIS, DIONE. The Li¹⁺ ions are trapped and ionized inside the EBIS electron beam. After acceleration through the RFQ, Li³⁺ ions are injected into MIMAS

[en] This document is concerned with the general requirements for radiation shielding common to most Advanced Photon Source (APS) users. These include shielding specifications for hutches, transport, stops, and shutters for both white and monochromatic beams. For brevity, only the results of calculations are given in most cases. So-called open-quotes special situationsclose quotes are not covered. These include beamlines with white beam mirrors for low-pass energy filters (open-quotes pink beamsclose quotes), extremely wide band-pass monochromators (multilayers), or novel insertion devices. These topics are dependent on beamline layout and, as such, are not easily generalized. Also, many examples are given for open-quotes typicalclose quotes hutches or other beamline components. If a user has components that differ greatly from those described, particular care should be taken in following these guidelines. Users with questions on specific special situations should address them to the APS User Technical Interface. Also, this document does not cover specifics on hutch, transport, shutter, and stop designs. Issues such as how to join hutch panels, floor-wall interfaces, cable feed-throughs, and how to integrate shielding into transport are covered in the APS Beamline Standard Components Handbook. It is a open-quotes living documentclose quotes and as such reflects the improvements in component design that are ongoing. This document has the following content. First, the design criteria will be given. This includes descriptions of some of the pertinent DOE regulations and policies, as well as brief discussions of abnormal situations, interlocks, local shielding, and storage ring parameters. Then, the various sources of radiation on the experimental floor are discussed, and the methods used to calculate the shielding are explained (along with some sample calculations). Finally, the shielding recommendations for different situations are given and discussed

[en] Routine production of [¹⁸F]fluoride has been carried out by 6 MeV proton irradiation of H₂¹⁸O water using a small-volume silver target vessel. By optimizing the target design, a 120 min irradiation of 600 μl 97% enriched [¹⁸O]H₂O at a beam current of 10 μA gives a practical yield of 5700±80 MBq (154±2 mCi). The produced [¹⁸F]fluoride has been used for no-carrier-added synthesis of 2-¹⁸FDG. (orig.)

[en] The results of electron-sodium scattering for the 3D → 3P transition at the projectile energy of 5 eV calculated using the Convergent Close Coupling method are presented. These include spin-resolved and spin-averaged alignment, orientation, and coherence parameters, as well as differential cross section and spin asymmetry. This calculation simultaneously produces results for the transitions 3P→3P at 6.52 eV and 3S → 3P at 8.62 eV. The three transitions are used to study the nature of the convergence in the close-coupling expansion. The results were found to be in good agreement with the existent experimental data. 15 refs., 9 figs

[en] The flexibility of the (e,2e) technique in obtaining information on both structure and collision dynamics is demonstrated. Examples of structure information are electron momentum spectroscopy studies of laser excited Na atoms and amorphous carbon films. The role of post-collision effects and correlations is explored by measurements in the autoionising region of helium and in innershell ionisation of argon. 26 refs., 11 figs

[en] A coupled-channel optical method for electron-atom scattering is applied to elastic electron-sodium scattering at energies of 20, 22.1, 54.4, 100, and 150 eV. It is demonstrated that the effect of all the inelastic channels on elastic scattering may be well reproduced by the 'ab initio' calculated complex non-local polarization potential. Whilst the experiments generally agree at small angles and therefore agree on the total elastic cross section, there is considerable discrepancy at intermediate and backward angles. 9 refs., 2 tabs., 1 fig

[en] A coupled-channel optical method for electron-atom scattering is applied to electron-sodium scattering at energies of 10, 20, 22.1, 40, 54.4, and 100 eV. The 3²S, 3²P, and 3²D channels are coupled explicitly whereas the rest of the one-electron excited states of the atom are taken into account via the 'ab initio' complex non-local polarization potential. The S²S-3²S and 3²S-3²P differential cross sections are found to be in good agreement with the recent experiments. The effect of the polarization potential does not change the qualitative results of a standard coupled-channel calculation, but improves agreement with the experiment. Integrated and total cross sections are also presented. 18 refs., 3 tabs., 2 figs

[en] Short communication

[en] The recently developed convergent J-matrix method is used to calculate resonances in the electron-lithium scattering cross sections (elastic, total, 2²p, 3²S, 3²P and 3²D). The positions and widths of the resonances are calculated using the poles of the S-matrix. 23 refs., 3 tabs., 2 figs

[en] We measured the yield of ¹⁵O, ¹¹C and ¹³N by photonuclear reactions in water exposed to bremsstrahlung gammas produced with a 1 GeV linac.The activity at saturation reached the values, respectively, of 30, 1.17 and 4.4.10^-1 mCi μA^-1cm^-3 of water. We describe the measurements and possible implications and we compare the experimental results with calculations performed with the Monte Carlo code GEANT. (orig.)