Experiments on synthesis of the heaviest elements at RIKEN

机译：RIKEN合成最重元素的实验

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In the Institute of Physical and Chemical Research (RIKEN), using high intensity heavy ion beams from the RIKEN Linear Accelerator, productions and decays of isotopes of the heaviest elements have been investigated by using the gas-filled recoil separator, GARIS. The isotopes studied were ~(265)Hs, ~(271)Ds, ~(272)Rg, ~(277)112, and ~(278)113, respectively. Based on the observed decay chains consisting of consecutive alpha decays connected to the previously known alpha decays or spontaneous fissions, assignments of the initially produced isotopes were done. Our data with the atomic number from 108 to 112, agree well with the data previously taken. The production cross section of the isotope ~(278)113 of the 113th element have reached around 32 fb which shows the simple decrease of the cross section with the increase of the atomic number. The isotopes were produced, for the first time in the ln evaporation channel from heavy-ion induced fusion reaction.

机译：在理化研究所（RIKEN），使用来自RIKEN线性加速器的高强度重离子束，通过使用充气反冲分离器GARIS，研究了最重元素的同位素的产生和衰减。研究的同位素分别为〜（265）Hs，〜（271）Ds，〜（272）Rg，〜（277）112和〜（278）113。基于观察到的衰变链，该衰变链由与先前已知的α衰变或自发裂变相连的连续α衰变组成，确定了最初产生的同位素。我们的原子序数为108到112的数据与先前获得的数据非常吻合。第113个元素的同位素〜（278）113的生产截面已达到32 fb左右，这表明截面随原子序数的增加而简单降低。同位素是由重离子诱导的聚变反应在ln蒸发通道中首次产生的。

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来源
《AIP Conference Proceedings vol.865; China-Japan Joint Nuclear Physics Symposium; 20060516-20; Shanghai(CN)》|2006年|P.159-164|共6页
会议地点 Shanghai(CN)
作者
K. Morimoto; K. Morita; D. Kaji; A. Yoneda; H. Haba; T. Akiyama; N. Sato; S. Goto; E. Ideguchi; K. Katori; H. Kikunaga; H. Koura; H. Kudo; T. Ohnishi; A. Ozawa; T. Suda; K. Sueki; F. Tokanai; T. Yamaguchi; A. Yoshida;
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作者单位

RIKEN (The Institute of Physical and Chemical research), Wako, Saitama 351-0198, Japan;

Department of Physics, Saitama University, Sakura, Saitama 338-8570, Japan;

Departent of Physics, Tohoku University, Sendai, Miyagi 980-8578, Japan;

Department of Chemis;

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原文格式 PDF
正文语种 eng
中图分类原子核物理学、高能物理学;
关键词
~(277)112; ~(278)113; production and decay; gas-filled recoil separator;

机译：〜（277）112;〜（278）113;产生和衰减;充气反冲分离器;

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2. Synthesis of heaviest nuclei and heaviest chemical elements [J] . Adam Sobiczewski Nukleonika . 2011,第3期

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4. Experiments on synthesis of the heaviest elements at RIKEN [C] . K. Morimoto, K. Morita, D. Kaji, China-Japan Joint Nuclear Physics Symposium . 2006

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Experiments on synthesis of the heaviest elements at RIKEN

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