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Sato, Tetsuya
Kagaku To Kogyo, 72(10), P. 867, 2019/10
We conducted measurements of the first ionization potential (IP
) of the heavy actinide elements, lawrencium (Lr, 
), nobelium (No, 
), mendelevium (Md, 
) and fermium (Fm, 
) by using a novel method based on a surface ionization process. The IP measurements have been performed using the ISOL (Isotope Separator On-Line) system equipped with a surface ion-source with short-lived heavy actinide isotopes, 
Lr (
= 27s), 
No ( = 24.5s), 
Md ( = 4.27 min), and 
Fm ( = 2.6 min). Our experimental results clearly showed that the IP of Lr is distinctly low among actinide elements. Moreover, No has the highest IP among them due to its full-filled 5f and 7s orbitals; the IP value increased with an atomic number up to No and decreased dramatically at Lr, indicating the similar trend with that of heavy lanthanide elements. Therefore, we concluded Lr would be the last member of the actinide series.
Hirade, Tetsuya
Kagaku To Kogyo, 92(2), p.44 - 54, 2018/02
A positron, an anti-particle of an electron, annihilates with an electron and emits energy that is proportional to mass energy as annihilation 
-rays. Positron annihilation methods are applied by detecting these -rays. The information of annihilation time, energy of -rays, and direction of -rays emission has been used for materials science. Here, positron annihilation lifetime, doppler broadening of annihilation -rays and positron annihilation age-momentum correlation are mainly explained by use of research examples for metals and polymers, etc.
Sato, Tetsuya; Nagame, Yuichiro; Tsukada, Kazuaki
Kagaku To Kogyo, 68(9), p.824 - 826, 2015/09
We successfully confirmed that lawrencium (Lr, element 103) is the last member of actinide series by a measurement of its first ionization potential. Obtained experimental result suggested that the outermost electronic orbital of Lr atom would have p-orbital similar to elements of group-13. Our result triggered again the discussion of the position of Lr and lutetium, the lanthanide homologue of Lr, on the Periodic Table.
Kiriyama, Hiromitsu
Kagaku To Kogyo, 81(8), p.363 - 370, 2007/08
We describe a design, performance and characterization of a high-peak power, high-contrast, high-beam quality laser system for energetic particle generation.
Nagame, Yuichiro
Kagaku To Kogyo, 57(6), P. 624, 2004/06
no abstracts in English
Nagame, Yuichiro
Kagaku To Kogyo, 56(1), P. 32, 2003/01
no abstracts in English
Yoshii, Kenji; Abe, Hideki*
Kagaku To Kogyo, 56(7), p.802 - 804, 2003/00
no abstracts in English
Hoshiya, Taiji
Kagaku To Kogyo, 75(8), p.379 - 387, 2001/08
no abstracts in English
Haba, Hiromitsu
Kagaku To Kogyo, 54(5), P. 590, 2001/00
no abstracts in English
Nishinaka, Ichiro
Kagaku To Kogyo, 53(5), P. 607, 2000/00
no abstracts in English
plasmaOkoshi, Kiyonori; Saito, Yuichi; Tajima, Satoshi
Kagaku To Kogyo, 52(11), p.1409 - 1412, 1999/11
no abstracts in English
Nagame, Yuichiro
Kagaku To Kogyo, 51(12), P. 1906, 1998/12
no abstracts in English
Tsukada, Kazuaki
Kagaku To Kogyo, 51(4), P. 615, 1998/00
no abstracts in English
N
fiber with excellenet thermal resistance, tensile strength and electrical insulating resistance*; Seguchi, Tadao; *
Kagaku To Kogyo, 49(9), p.1256 - 1258, 1996/00
no abstracts in English
Nagame, Yuichiro
Kagaku To Kogyo, 48(8), 946 Pages, 1995/00
no abstracts in English
Sasaki, Yuji
Kagaku To Kogyo, 45(8), p.1433 - 1434, 1992/08
no abstracts in English
Kudo, Hiroshi
Kagaku To Kogyo, 45(5), p.941 - 944, 1992/00
no abstracts in English
Kubota, Masumitsu
Kagaku To Kogyo, 44(8), p.1284 - 1287, 1991/00
no abstracts in English
