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首页> 外文期刊>Journal of Physics, G. Nuclear and Particle Physics: An Institute of Physics Journal >~(44)Ti, ~(26)Al and ~(53)Mn samples for nuclear astrophysics: The needs, the possibilities and the sources
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~(44)Ti, ~(26)Al and ~(53)Mn samples for nuclear astrophysics: The needs, the possibilities and the sources

机译:核天体物理学的〜(44)Ti,〜(26)Al和〜(53)Mn样品:需求,可能性和来源

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摘要

Exploration of the physics involved in the production of cosmogenic radionuclides requires experiments using the same rare, radioactive nuclei in sufficient quantities. For this work, such exotic radionuclides have been extracted from previously proton-irradiated stainless steel samples using wet chemistry separation techniques. The irradiated construction material has arisen from an extended material research programme at the Paul Scherrer Institute, called STIP (SINQ Target Irradiation Program), where several thousand samples of different materials were irradiated with protons and neutrons of energies up to 570 MeV. In total, 8 × 10 ~(17) atoms of ~(44)Ti, 10 ~(16) atoms of ~(26)Al and 10 ~(19) atoms of ~(53)Mn are available from selected samples. These materials may now be used to produce targets or radioactive beams for nuclear reaction studies with protons, neutrons and α-particles. The work is part of the ERAWAST initiative (Exotic Radionuclides from Accelerator Waste for Science and Technology), aimed at facilitating new collaborations between the isotope producers and users from different scientific fields including nuclear astrophysics.
机译:要探索宇宙放射性核素生产所涉及的物理学,就需要使用足够数量的稀有放射性核进行实验。对于这项工作,已经使用湿化学分离技术从先前质子辐照过的不锈钢样品中提取了这种外来放射性核素。辐照的建筑材料来自Paul Scherrer研究所扩展的材料研究计划,即STIP(SINQ目标辐照计划),其中数千种不同材料的样品被质子和中子辐照的能量高达570 MeV。从选定的样品中总共可获得〜(44)Ti的8×10〜(17)个原子,〜(26)Al的10〜(16)个原子和〜(53)Mn的10〜(19)个原子。这些材料现在可用于产生质子,中子和α粒子的靶标或放射性束,用于核反应研究。这项工作是ERAWAST计划(来自加速器废物的科学技术的外来放射性核素)的一部分,该计划旨在促进同位素生产者与来自不同科学领域(包括核天体物理学)的用户之间的新合作。

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