Dynamical calculation for fusion–fission probability in superheavy mass region, where mass symmetric fission events originate - INSPIRE

DataBETA

Dynamical calculation for fusion–fission probability in superheavy mass region, where mass symmetric fission events originate

2004

12 pages

Published in:

Nucl.Phys.A 744 (2004) 3-14

Published: 2004

DOI:

10.1016/j.nuclphysa.2004.08.009

View in:

Nuclear Science References

reference search74 citations

Citations per year

Abstract: (Elsevier)

We discuss dynamically the fusion–fission mechanism in the superheavy mass region. By analyzing the mass distribution of fission fragments, we distinguish between the fusion–fission process and the quasi-fission process. We investigate these two processes using the fluctuation–dissipation model. The three-dimensional Langevin equation is employed. We classify the dynamical process by analyzing the trajectory in the nuclear deformation space. In the superheavy mass region, we found that 90–99% of mass symmetric fission events come from the quasi-fission process, in which the system hardly reaches the spherical region. The fusion cross section is also estimated precisely.

Superheavy elements
Fluctuation–dissipation dynamics
Fusion–fission process
Quasi-fission process

References(50)

Figures(0)

[1]

Nuclear masses and deformations

- Nucl.Phys. 81 (1966) 1-60
•
DOI:
- 10.1016/S0029-5582(66)80001-9

[1]

A. Sobiczewski

- Phys.Lett. 22 (1966) 500

[2]

Oganessian
,
Yu.Ts.

- Nature 400 (1999) 242

[2]

Synthesis of Superheavy Nuclei in the Ca-48 + Pu-244 Reaction

et al.

- Phys.Rev.Lett. 83 (1999) 3154-3157
•
DOI:
- 10.1103/PhysRevLett.83.3154

[3]

Oganessian
,
Yu.Ts.

- Phys.Rev.C 63 (2001) 011301(R)

[4]

Oganessian
,
Yu.Ts.

- Phys.Rev.C 69 (2004) 021601(R)

[5]

The Discovery of the Heaviest Elements

S. Hofmann
(
- Darmstadt, GSI
)
,
G. Munzenberg
(
- Darmstadt, GSI
)

- Rev.Mod.Phys. 72 (2000) 733-767
•
DOI:
- 10.1103/RevModPhys.72.733

[5]

New results on elements 111 and 112

et al.

- Eur.Phys.J.A 14 (2002) 147-157
•
DOI:
- 10.1140/epja/i2001-10119-x

[6]

Status of heavy element research using GARIS at RIKEN

et al.

- Nucl.Phys.A 734 (2004) 101-108
•
DOI:
- 10.1016/j.nuclphysa.2004.01.019

[7]

Isotopic dependence of fusion cross-sections in reactions with heavy nuclei

G.G. Adamian
(
- Giessen U. and
- Dubna, JINR and
- Tashkent, IYF
)
,
N.V. Antonenko
(
- Giessen U. and
- Dubna, JINR
)
,
W. Scheid
(
- Giessen U.
)

- Nucl.Phys.A 678 (2000) 24-38
•
e-Print:
- nucl-th/9911078
•
DOI:
- 10.1016/S0375-9474(00)00317-1

[7]

Analysis of survival probability of superheavy nuclei

- Phys.Rev.C 62 (2000) 064303
•
DOI:
- 10.1103/PhysRevC.62.064303

[8]

G. Giardina

- Eur.Phys.J.A 8 (2000) 205

[9]

Two step model of fusion for synthesis of superheavy elements

Caiwan Shen
(
- Beijing, Inst. Atomic Energy and
- INFN, Catania and
- Omsk State U. and
- Lanzhou U.
)
,
Grigori Kosenko
(
- Omsk State U. and
- Wako, RIKEN
)
,
Yasuhisa Abe
(
- Kyoto U., Yukawa Inst., Kyoto
)

- Phys.Rev.C 66 (2002) 061602
•
e-Print:
- nucl-th/0212029
•
DOI:
- 10.1103/PhysRevC.66.061602

[10]

V.I. Zagrebaev

- J.Nucl.Radiochem.Sci. 3 (2002) 13

[11]

Synthesis of superheavy nuclei: How accurately can we describe it and calculate the cross-sections?

- Phys.Rev.C 65 (2002) 014607
•
DOI:
- 10.1103/PhysRevC.65.014607

[12]

Proceedings of Fusion Dynamics at the Extremes

M.G. Itkis

[13]

The dynamics of nuclear coalescence or reseparation

W.J. Swiatecki

- Phys.Scripta 24 (1981) 113
•
DOI:
- 10.1088/0031-8949/24/1B/007

[13]

The dynamics of the fusion of two nuclei

W.J. Swiatecki

- Nucl.Phys.A 376 (1982) 275-291
•
DOI:
- 10.1016/0375-9474(82)90065-3

[14]

DYNAMICAL ASPECTS OF NUCLEUS NUCLEUS COLLISIONS

S. Bjornholm
(
- Bohr Inst.
)
,
W.J. Swiatecki
(
- LBL, Berkeley
)

- Nucl.Phys.A 391 (1982) 471-504
•
DOI:
- 10.1016/0375-9474(82)90621-2

[15]

Dynamical hindrance to compound-nucleus formation in heavy-ion reactions

- Nucl.Phys.A 459 (1986) 145-172
•
DOI:
- 10.1016/0375-9474(86)90061-8

[16]

C.E. Aguiar

- Nucl.Phys.A 491 (1989) 2031

[16]

C.E. Aguiar

- Nucl.Phys.A 514 (1990) 205

[17]

The treatment of heavy-ion collisions by Langevin equations

- Nucl.Phys.A 477 (1988) 143-161
•
DOI:
- 10.1016/0375-9474(88)90366-1

[18]

Diffusion mechanism for synthesis of superheavy elements

- Phys.Rev.C 55 (1997) R1011-R1014
•
DOI:
- 10.1103/PhysRevC.55.R1011

[18]

Fluctuation-dissipation model for synthesis of superheavy elements

- Phys.Rev.C 59 (1999) 796-809
•
DOI:
- 10.1103/PhysRevC.59.796

1-25 of 50
1
2
25 / page