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Production and trapping of radioactive atoms at the TRI\muP facility  [PDF]
E. Traykov,U. Dammalapati,S. De,O. C. Dermois,L. Huisman,K. Jungmann,W. Kruithof,A. J. Mol,C. J. G. Onderwater,A. Rogachevskiy,M. da Silva e Silva,M. Sohani,O. Versolato,L. Willmann,H. W. Wilschut
Physics , 2007, DOI: 10.1016/j.nimb.2008.05.077
Abstract: The structures for the TRI$\mu$P facility have been completed and commissioned. At the facility radioactive nuclides are produced to study fundamental interactions and symmetries. An important feature is the possibility to trap radioactive atoms in order to obtain and hold a pure substrate-free sample for precision measurements. In the TRI$\mu$P facility a production target is followed by a magnetic separator, where radioactive isotopes are produced in inverse reaction kinematics. Separation up to 99.95% could be achieved for $^{21}$Na. A novel transmitting thermal ionizing device was developed to stop the energetic isotopes. Some 50% of stopped $^{21}$Na could be extracted and transported as low energy singly charged ions into a radio frequency quadrupole cooler and buncher with 35% transmission efficiency. The ions are transported lossless via a drift tube and a low energy electrostatic beam line into the experimental setup. Such ions can be neutralized on hot metal foils and the resulting atoms can be stored in a magneto-optical trap. The functioning of that principle was demonstrated with stable Na extracted from the thermal ionizer, radioactive beams will follow next.
On the usage of electron beam as a tool to produce radioactive isotopes in photo-nuclear reactions  [PDF]
G. G. Bunatian,V. G. Nikolenko,A. B. Popov
Physics , 2010,
Abstract: We treat the bremsstrahlung induced by initial electron beam in converter, and the production of a desirable radio-isotope due to the photo-nuclear reaction caused by this bremsstrahlung. By way of illustration, the yield of a number of some, the most in practice applicable, radio-isotopes is evaluated. The acquired findings persuade us that usage of modern electron accelerators offers a practicable way to produce the radio-isotopes needful nowadays for various valuable applications in the nuclear medicine.
TRI$μ$P - A New Facility to Investigate Fundamental Interactions with Optically Trapped Radioactive Atoms  [PDF]
Klaus Jungmann
Physics , 2002,
Abstract: At the Kernfysisch Versneller Instituut (KVI) in Groningen, NL, a new facility (TRI$\mu$P) is under development. It aims for producing, slowing down and trapping of radioactive isotopes in order to perform accurate measurements on fundamental symmetries and interactions. A spectrum of radioactive nuclids will be produced in direct, inverse kinematics of fragmentation reactions using heavy ion beams from the superconducting AGOR cyclotron. The research programme pursued by the KVI group includes precision studies of nuclear $\beta$-decays through $\beta$--neutrino (recoil nucleus) momentum correlations in weak decays and searches for permanent electric dipole moments in heavy atomic systems. This offers a large potential for discovering new physics or to limit parameters in models beyond standard theory significantly. The scientific approach chosen in TRI$\mu$P can be regarded as complementary to such high energy physics. The facility in Groningen will be open for use by the worldwide community of scientists.
Direct measurements of neutron capture on radioactive isotopes  [PDF]
A. Couture,R. Reifarth
Physics , 2009, DOI: 10.1016/j.adt.2007.06.003
Abstract: We simulated the response of a 4p calorimetric g-detector array to decays of radioactive isotopes on the s-process path. The GEANT 3.21 simulation package was used. The main table contains estimates on the maximum sample size and required neutron flux based on the latest available neutron capture cross section at 30 keV. The results are intended to be used to estimate the feasibility of neutron capture measurements with 4p arrays using the time of flight technique.
Metastasic bone pain management with radioactive isotopes
Coya Vi?a, Juan;
Brazilian Archives of Biology and Technology , 2005, DOI: 10.1590/S1516-89132005000700018
Abstract: pain is the commonest clinical manifestation of bone metastases. its treatment is palliative in nature, and consists of chemotherapy, radiotherapy, hormonotherapy, diphosphonates, and drug therapy (i. e., opiates). radioactive isotopes represent an appealing alternative to conventional treatment modalities. among the different types of isotopes, wide clinical experience with 153sm has been obtained in this laboratory. in the present study, 94 patients (mean age = 65 years), who had been diagnosed of having breast, prostate and other malignant tumors, were evaluated. these patients were treated with 37 mbq/kg 153sm-edtmp. all of them complained of bone pain and had scintigraphic evidence of metastatic bone dissemination. treatment efficacy was evaluated both objectively and subjectively. eighty-five per cent (85%) of the patients reported pain relief, and analgesia was reduced by 55%. twenty-two per cent (22%) had a complete response. bone marrow toxicity was not a concern, with mild transient hematologic derangements in 30% of the patients. it was concluded that 153sm-edtmp results in relief or cessation of metastatic bone pain in a majority of patients.
The Acceleration and Storage of Radioactive Ions for a Beta-Beam Facility  [PDF]
Mats Lindroos,the beta-beam Working Group
Physics , 2003, DOI: 10.1016/j.nuclphysa.2004.09.112
Abstract: The term beta-beam has been coined for the production of a pure beam of electron neutrinos or their antiparticles through the decay of radioactive ions circulating in a storage ring. This concept requires radioactive ions to be accelerated to as high Lorentz gamma as 150. The neutrino source itself consists of a storage ring for this energy range, with long straight sections in line with the experiment(s). Such a decay ring does not exist at CERN today, nor does a high-intensity proton source for the production of the radioactive ions. Nevertheless, the existing CERN accelerator infrastructure could be used as this would still represent an important saving for a beta-beam facility.
Production cross section of neutron-rich isotopes with radioactive and stable beams  [PDF]
Myeong-Hwan Mun,G. G. Adamian,N. V. Antonenko,Yongseok Oh,Youngman Kim
Physics , 2014, DOI: 10.1103/PhysRevC.89.034622
Abstract: The production cross section of neutron-rich isotopes of Ca, Zn, Te, Xe, and Pt are predicted in the diffusive multi-nucleon transfer reactions with stable and radioactive beams. With these isotopes one can treat the neutron shell evolution beyond N = 28, 50, 82, and 126. Because of the small cross sections, the production of nuclei near the neutron drip line requires the optimal choice of reaction partners and bombarding energies.
Production of exotic isotopes in complete fusion reactions with radioactive beams  [PDF]
V. V. Sargsyan,A. S. Zubov,G. G. Adamian,N. V. Antonenko,S. Heinz
Physics , 2013, DOI: 10.1103/PhysRevC.88.054609
Abstract: The isotopic dependence of the complete fusion (capture) cross section is analyzed in the reactions $^{130,132,134,136,138,140,142,144,146,148,150}$Xe+$^{48}$Ca with stable and radioactive beams. It is shown for the first time that the very neutron-rich nuclei $^{186-191}$W can be reached with relatively large cross sections by complete fusion reactions with radioactive ion beams at incident energies near the Coulomb barrier. A comparison between the complete fusion and fragmentation reactions for the production of neutron-rich W and neutron-deficient Rn isotopes is performed.
Neutron capture measurements at a RIA-type facility  [PDF]
R. Reifarth,R. C. Haight,M. Heil,F. Kaeppeler,D. J. Vieira
Physics , 2004, DOI: 10.1016/j.nima.2004.01.050
Abstract: Neutron capture cross sections of unstable isotopes are important for neutron induced nucleosynthesis as well as for technological applications. The Rare Isotope Accelerator (RIA) or comparable facilities will be able to produce radioactive ion beams up to 10**12 particles/s and would therefore be a suitable place for (n,g) studies on radioactive isotopes with half-lives between days and months. We propose a facility for measurements of (n,g) cross sections of unstable isotopes in the keV range suited for minimal sample masses down to 10**15 atoms, corresponding to minimum half-lives of only 10 d.
Aspects of Cooling at the TRI$μ$P Facility  [PDF]
L. Willmann,G. P. Berg,U. Dammalapati,S. De,P. Dendooven,O. Dermois,K. Jungmann,A. Mol,C. J. G. Onderwater,A. Rogachevskiy,M. Sohani,E. Traykov,H. W. Wilschut
Physics , 2006, DOI: 10.1063/1.2190159
Abstract: The Tri$\mu$P facility at KVI is dedicated to provide short lived radioactive isotopes at low kinetic energies to users. It comprised different cooling schemes for a variety of energy ranges, from GeV down to the neV scale. The isotopes are produced using beam of the AGOR cyclotron at KVI. They are separated from the primary beam by a magnetic separator. A crucial part of such a facility is the ability to stop and extract isotopes into a low energy beamline which guides them to the experiment. In particular we are investigating stopping in matter and buffer gases. After the extraction the isotopes can be stored in neutral atoms or ion traps for experiments. Our research includes precision studies of nuclear $\beta$-decay through $\beta$-$\nu$ momentum correlations as well as searches for permanent electric dipole moments in heavy atomic systems like radium. Such experiments offer a large potential for discovering new physics.
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