[en] Full text of publication follows. The ARRONAX cyclotron [Ref.1], acronym for 'Accelerator for Research in Radiochemistry and Oncology at Nantes Atlantique' is a new facility installed in Nantes, France. A dedicated program has been launched on production of innovative radionuclides for PET imaging and for β- and α targeted radiotherapy using proton or α particle. Since the accelerator is also able to deliver deuteron beams up to 35 MeV, we have reconsidered the possibility to use them to produce medical isotopes. Indeed, in some cases, the use of deuterons allows higher production yield than protons. In this study, we have focused on "1"8"6Re production using deuteron. This radionuclide is a β- emitter which has chemical properties close to the widely used "9"9"mTc and has been used in clinical trials for palliation of painful bone metastases resulting from prostate and breast cancer [Ref.2]. Production cross section has been measured between 9 and 23 MeV using the ARRONAX deuteron beam and the stacked-foil technique [Ref.3]. A novelty in our work is the use of "n"a"tTi monitor foils behind each "n"a"tW target foil in order to record efficiently the deuteron incident flux and energies all over the stack relying on the IAEA recommended cross section [Ref.4] of the "n"a"tTi(d,x)"4"8V reaction. Typical experimental conditions consist in an irradiation time of 30 minutes in air with a beam intensity of 100 nA. Activity measurements are made using gamma spectrometry. Isotope of interest and contaminants created during irradiation are measured since a good optimization process is supposed to find the best compromise between production yield and purity of the final product. Our new sets of data will be compared with the existing ones [Refs.5, 6] and with results given by TALYS code calculations [Ref.7]. Production yield will be determined and the best production route, using proton or deuteron, identified. References: [1] F.Haddad et al., Eur. J. Med. Mol. Imaging (2008) 35:1377-1387; [2] H. Palmedo, J.K. Rockstroh et al., Radiology 2001; 221:256-260; [3] S.M. Qaim, Appl. Radiat. Isot. Vol. 46, 9, 955-960 (1995); [4] IAEA-TECDOC-1211, Chapter 4, 49-152, ISN 1011-4289 (2011); [5] National Nuclear Data Center, BNL (USA); [6] F. Tarkanyi, S. Takacs, F. Szelecsenyi, F. Ditroi, A. Hermanne, M. Sonck, Nuc. Instrum. Meth. B 211 (2003) 319-330; [7] A.J. Koning et al., 'TALYS-1.4', A nuclear reaction program (December 28, 2011). (authors)

[en] Strange and multistrange baryon and antibaryon production is a useful probe into the dynamics of the hot hadronic matter created in central heavy ion interactions. Relative production yields and transverse mass spectra are presented and compared for pW and SW interactions. (author)

[en] The dynamics of fusion-fission processes in heavy-ion collisions has been extensively investigated, both theoretically and experimentally, in recent years. The time evolution of the composite system formed after interaction, and parameters on which the dynamics depends etc., are still not fully understood. Studies on dynamical processes in heavy ion collisions at the near-Coulomb-barrier energies have shown that complete fusion does not occur immediately in the case of massive nuclei collisions. Among various competing processes, quasifission (QF) is the dominant non-compound nuclear process. We, here report the di-nuclear system (DNS) model predictions of capture, fusion and quasi fission cross-sections for ³⁰Si+^182,184,186W systems in the centre-of-mass energy range 113 MeV to 163 MeV

[en] Nuclear reaction cross-section data are of prime importance for upcoming fission Accelerator Driven Subcritical System (ADSs), Advance Heavy Water Reactor (AHWR), and fusion device International Thermonuclear Experimental Reactor (ITER). Measured in the present work is the (n, α) reaction cross-section for ¹⁸⁴W isotopes at average neutron energy of 16.10±0.61 MeV. The quasi monoenergetic neutrons at 16.10±0.61 MeV have produced from the ^natLi(p,n) reaction. The measured result was also compared with literature data taken from EXFOR data library and the theoretical nuclear code TALYS-1.9

[en] Pre-scission neutron multiplicity has been established as an important tool to study fission time scale in heavy ion-induced fusion-fission reactions. In recent years, several experiments have been performed which ascertains that pre-scission neutron multiplicities are more than the same predicted from the standard statistical model. The excess neutron emission could be attributed to the dynamical time delay in fission process. Thus, the dynamical evolution of fission need to be incorporated in the theoretical calculation to address this problem properly. Here we report measurement of neutron multiplicities in coincidence with fission from the compound nucleus (CN) ²⁰³Bi, formed in the reaction ¹⁹F+¹⁸⁴W, at beam energies (E_lab) near the Coulomb barrier. Evaporation residue (ER) excitation function and ER-gated CN angular momentum distribution for this system were reported earlier

[en] The data on the ¹⁸⁴W low-spin states in the (n, 2γ) reaction by the neutrons energy E_n = 2 keV are considered. It appeared that in contrast to the ¹⁵⁶Gd or ¹⁶⁸Er the spread of the (I_γ/E_γ)⁵ values for the E1 γ-transitions populating the levels with similar spins J^π = 0⁺ or 2⁺ in the case of ¹⁸⁴W is very large because they follow from the capture 0^- and 1^- states

[en] The study of fission in heavy ion interactions has been a topic of resurgent interest. The measured charge and mass distributions are important post fission observables and provide testing grounds for theories of nuclear fission. An important observation in the earlier studies on fission reaction dynamics was the observation of asymmetric mass distributions at lower excitation energies in majority of actinides and decrease of asymmetry with the increase in the excitation energy. Studies on the effect of excitation energy and angular momentum on various fission observables have provided deeper insights into the mechanism of fission. In recent studies, heavy ions (HI) have been increasingly used as projectiles to study the fission of compound nuclei (CN) for a wide range of fissionability parameter (Z²/A), excitation energy, and angular momentum

[en] Elastic and inelastic proton scattering from even-even W isotopes is predicted from a deformed optical potential previously determined from neutron scattering data. Comparisons are made with experimental proton data at 16 MeV

[en] Published in summary form only

[en] In reaction dynamics effect of deformations and orientations has a major contribution. The study of the fusion reaction of ¹⁶O with deformed and spherical Sm reactions shows the importance of deformation in heavy-ion reactions. In the side tip collision, the fusion reaction needs some extra energy than the fusion barrier. The Subbarrier fusion process is influenced by the deformations of both the projectile and target nucleus. From the study of fusion cross sections calculated for ¹⁶O on ¹⁸⁴W at sub-barrier energies, it is clear that in sub-barrier fusion for positive and negative quadrupole and hexadecapole moments respectively nuclei have larger cross sections. In the present work, we have selected different projectile target combinations to synthesize the compound nucleus ²²⁰Th. The fusion evaporation residue cross section for these projectile target combinations is evaluated using AS model and it is compared with experiments. The significance of quadrupole deformation and hexadecapole deformation on heavy ion fusion reactions leads to synthesis the compound nucleus ²²⁰Th is studied. Influence of hexadecapole on the heavy ion fusion is larger than that of quadrupole deformation. The combination of deformations on entrance channel parameters are required to study complete information of heavy ion fusion