The new isotope 208Th

被引：26

作者：

Heredia, J. A. ^{[1
,2
]}

Andreyev, A. N. ^{[3
,4
]}

Antalic, S. ^{[5
]}

Hofmann, S. ^{[2
,6
]}

Ackermann, D. ^{[2
]}

Comas, V. F. ^{[1
,2
]}

Heinz, S. ^{[2
]}

Hessberger, F. P. ^{[2
]}

Kindler, B. ^{[2
]}

Khuyagbaatar, J. ^{[2
]}

Lommel, B. ^{[2
]}

Mann, R. ^{[2
]}

机构：

[1] Goethe Univ Frankfurt, FIAS, D-60438 Frankfurt, Germany

[2] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[3] Univ W Scotland, Sch Sci & Engn, Paisley PA1 2BE, Renfrew, Scotland

[4] Univ Leuven, KU Leuven, Inst Kern Stralingsfys, B-3001 Louvain, Belgium

[5] Comenius Univ, Dept Nucl Phys & Biophys, Bratislava 84248, Slovakia

[6] Goethe Univ Frankfurt, Inst Phys, D-60054 Frankfurt, Germany

来源：

EUROPEAN PHYSICAL JOURNAL A | 2010年 / 46卷 / 03期

关键词：

ALPHA-DECAY; NUCLEAR; SHIP; FRAGMENTATION; SPECTROSCOPY; SEPARATOR; ELEMENTS; U-238;

D O I：

10.1140/epja/i2010-11058-1

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The new neutron-deficient isotope Th-208 was produced in the complete-fusion reaction Ni-64 + Sm-147 -> Th-208 + 3n. Evaporation residues were separated in-flight by the velocity filter SHIP and subsequently identified on the basis of energy-, position- and time-correlated alpha-decay chains. The measured alpha-decay energy and half-life value of Th-208 are 8044(30) keV and 1.7(-0.6)(+1.7) , respectively. Improved data on the alpha-decay of Th-209, Th-210, Th-212 and Ra-208 were obtained using complete-fusion reactions of Ni-64 with Sm-147, Sm-150, and Sm-152 targets.

引用

页码：337 / 343

页数：7

共 22 条

[1] Excited states in the neutron-deficient nuclei 197,199,201Rn [J].

Andgren, K. ;

Cederwall, B. ;

Uusitalo, J. ;

Andreyev, A. N. ;

Freeman, S. J. ;

Greenlees, P. T. ;

Hadinia, B. ;

Jakobsson, U. ;

Johnson, A. ;

Jones, P. M. ;

Joss, D. T. ;

Juuitinen, S. ;

Julin, R. ;

Ketelhut, S. ;

Khaplanov, A. ;

Leino, M. ;

Nyman, M. ;

Page, R. D. ;

Rahkila, P. ;

Sandzelius, M. ;

Sapple, P. ;

Saren, J. ;

Scholey, C. ;

Simpson, J. ;

Sorri, J. ;

Thomson, J. ;

Wyss, R. .

PHYSICAL REVIEW C, 2008, 77 (05)

[2] Conversion electron and beta decay spectroscopy at SHIP [J].

Andreyev, AN ;

Ackermann, D ;

Hessberger, FP ;

Hofmann, S ;

Huyse, M ;

Münzenberg, G ;

Page, RD ;

Van de Vel, K ;

Van Duppen, P .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 533 (03) :409-421

[3] The NUBASE evaluation of nuclear and decay properties [J].

Audi, G ;

Bersillon, O ;

Blachot, J ;

Wapstra, AH .

NUCLEAR PHYSICS A, 2003, 729 (01) :3-128

[4] The discovery of the heaviest elements [J].

Hofmann, S ;

Münzenberg, G .

REVIEWS OF MODERN PHYSICS, 2000, 72 (03) :733-767

[5] alpha decay of a new isotope Th-209 [J].

Ikezoe, H ;

Ikuta, T ;

Hamada, S ;

Nagame, Y ;

Nishinaka, I ;

Tsukada, K ;

Oura, Y ;

Ohtsuki, T .

PHYSICAL REVIEW C, 1996, 54 (04) :2043-2046

[6] Isomeric states in 214Th and 213Th [J].

Khuyagbaatar, J. ;

Hofmann, S. ;

Hessberger, F. P. ;

Ackermann, D. ;

Antalic, S. ;

Burkhard, H. G. ;

Heinz, S. ;

Kindler, B. ;

Lisetskiy, A. F. ;

Lommel, B. ;

Mann, R. ;

Nishio, K. ;

Schoett, H. J. ;

Sulignano, B. .

EUROPEAN PHYSICAL JOURNAL A, 2007, 34 (04) :355-361

[7] Chemical compound targets for SHIP on heated carbon backings [J].

Kindler, B ;

Ackermann, D ;

Hartmann, W ;

Hessberger, FP ;

Hofmann, S ;

Lommel, B ;

Mann, R ;

Steiner, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 561 (01) :107-111

[8] Nuclear data sheets for A=201 [J].

Kondev, F. G. .

NUCLEAR DATA SHEETS, 2007, 108 (02) :365-+

[9] Production cross-sections of protactinium and thorium isotopes produced in fragmentation of 238U at 1A GeV [J].

Kurcewicz, J ;

Liu, Z ;

Pfützner, M ;

Woods, PJ ;

Mazzocchi, C ;

Schmidt, KH ;

Kelic, A ;

Attallah, F ;

Badura, E ;

Davids, CN ;

Davinson, T ;

Döring, J ;

Geissel, H ;

Górska, M ;

Grzywacz, R ;

Hellström, M ;

Janas, Z ;

Karny, M ;

Korgul, A ;

Mukha, I ;

Plettner, C ;

Robinson, A ;

Roeckl, E ;

Rykaczewski, K ;

Schmidt, K ;

Seweryniak, D ;

Sümmerer, K ;

Weick, H .

NUCLEAR PHYSICS A, 2006, 767 :1-12

[10]

LEINO M, 1995, ACTA PHYS POL B, V26, P309

← 1 2 3 →