Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V....

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Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V. Zagrebaev and W. Greiner, 2007

Transcript of Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V....

Page 1: Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V. Zagrebaev and W. Greiner, 2007.

Deep inelastic reactions

238U

248Cm

primaryfragments

superheavyisotope

≈ 208Pb

≈ 278Sg

fission

V. Zagrebaev and W. Greiner, 2007

Page 2: Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V. Zagrebaev and W. Greiner, 2007.

New methods: SHIPtrap

-1 0 1 2 3 4 5118

120

122

124

126

128

130

G.S.m

ean

TO

F/u

s

exc. freq. / Hz

147Dy+I.S.

Isobar separation at A=147 in the purification trap

Isomeric state identification in the measurement trap

147Dy+

gsIsomer

732350 732400 732450 732500

0

10

20

30

40

50

60

147Tb

147Dy

147Ho

No.

of i

ons

Excitation frequency / Hz

147Er

147Er147Tb

147Dy

147Ho

Buncher

ExtractionRFQ

Fusion / transfer productsfrom SHIP

Stopping cell

Measurementtrap

Detector

Downstreamexperiments

Purificationtrap

M. Block et al.

8.44 MeV

750 keV

Page 3: Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V. Zagrebaev and W. Greiner, 2007.

SHIPtrap: Most recent results, August 2008

M. Block et al.

48Ca + 208Pb => 254No + 2n

48Ca + 206Pb => 252No + 2n

σ = 2 b

σ = 900 nb

3 ions/s into gas-cell

σ = 400 nb

48Ca + 207Pb => 253No + 2n

BE = ± 10 keV

Excitation frequency / Hz – 846665

Page 4: Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V. Zagrebaev and W. Greiner, 2007.

152

162

Deformed nucleiDeformed nuclei

82

10 5

126

ResultsResults

Neutrons

Pro

ton

s

fusionColdColdfusion

superdeformedSF IsomerssuperdeformedSF Isomers

Bi - modalfissionBi - modalfission

K IsomersK Isomers

fusionfusionHotHot 184

Increased stabilityIncreased stability

Search for

in nature,in transferreaktions

SHE Search for

in nature,in transferreaktions

SHE

Chemistry ofTA-elements

“Relativisticeffects“ inSH atoms

Chemistry ofTA elements

“Relativisticeffects“ inSH atoms

Page 5: Deep inelastic reactions 238 U 248 Cm primary fragments superheavy isotope 208 Pb 278 Sg fission V. Zagrebaev and W. Greiner, 2007.

SHIP Collaboration

S. Hofmann, D. Ackermann, M. Block, H.G. Burkhard, S. Heinz, F.P. Heßberger, B. Kindler, I. Kojouharov,

B. Lommel, R. Mann, J. Maurer, G. Münzenberg, H.J. Schött, B. Sulignano Gesellschaft für Schwerionenforschung (GSI)

Darmstadt, Germany

A.G. Popeko, A.V. YereminFlerov Laboratory of Nuclear Reactions, JINR

Dubna, Russia

S. Antalic, S. Saro, B. Streicher Department of Nuclear Physics, Comenius University

Bratislava, Slovakia

P. Kuusiniemi, M. Leino, J. UusitaloDepartment of Physics, University of Jyväskylä

Jyväskylä, Finland

K. NishioJapan Atomic Energy Research Institute

Tokai, Japan

Z. GanInstitute of Modern Physics(IMP)

Lanzhou, China

R. DresslerPaul-Scherrer Institute (PSI)

Villigen, Switzerland