Predominant time scales in fission processes in reactions of S, Ti and Ni with W: Zeptosecond versus attosecond

R. Du Rietz; D. J. Hinde; M. Dasgupta; R. G. Thomas; L. R. Gasques; M. Evers; N. Lobanov; A. Wakhle

doi:10.1103/PhysRevLett.106.052701

Predominant time scales in fission processes in reactions of S, Ti and Ni with W: Zeptosecond versus attosecond

R. Du Rietz^*, D. J. Hinde, M. Dasgupta, R. G. Thomas, L. R. Gasques, M. Evers, N. Lobanov, A. Wakhle

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

106 Citations (Scopus)

Abstract

The inhibition of fusion by quasifission is crucial in limiting the formation of superheavy elements in collisions of heavy nuclei. Time scales of ∼10⊃-18s inferred for fissionlike events from recent crystal blocking measurements were interpreted to show either that quasifission itself is slower than previously believed, or that the fraction of slow fusion-fission is higher than expected. New measurements of mass-angle distributions for Ti48 and Ni64 bombarding W targets show that in these reactions quasifission is the dominant process, typically occurring before the system formed after contact has made a single rotation, corresponding to time scales of ≤10⊃-20s.

Original language	English
Article number	052701
Journal	Physical Review Letters
Volume	106
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.106.052701
Publication status	Published - 1 Feb 2011

Access to Document

10.1103/PhysRevLett.106.052701

Cite this

@article{9dcbcd087edf44e8b22c7bdc32b1de89,

title = "Predominant time scales in fission processes in reactions of S, Ti and Ni with W: Zeptosecond versus attosecond",

abstract = "The inhibition of fusion by quasifission is crucial in limiting the formation of superheavy elements in collisions of heavy nuclei. Time scales of ∼10⊃-18s inferred for fissionlike events from recent crystal blocking measurements were interpreted to show either that quasifission itself is slower than previously believed, or that the fraction of slow fusion-fission is higher than expected. New measurements of mass-angle distributions for Ti48 and Ni64 bombarding W targets show that in these reactions quasifission is the dominant process, typically occurring before the system formed after contact has made a single rotation, corresponding to time scales of ≤10⊃-20s.",

author = "{Du Rietz}, R. and Hinde, {D. J.} and M. Dasgupta and Thomas, {R. G.} and Gasques, {L. R.} and M. Evers and N. Lobanov and A. Wakhle",

year = "2011",

month = feb,

day = "1",

doi = "10.1103/PhysRevLett.106.052701",

language = "English",

volume = "106",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Predominant time scales in fission processes in reactions of S, Ti and Ni with W

T2 - Zeptosecond versus attosecond

AU - Du Rietz, R.

AU - Hinde, D. J.

AU - Dasgupta, M.

AU - Thomas, R. G.

AU - Gasques, L. R.

AU - Evers, M.

AU - Lobanov, N.

AU - Wakhle, A.

PY - 2011/2/1

Y1 - 2011/2/1

N2 - The inhibition of fusion by quasifission is crucial in limiting the formation of superheavy elements in collisions of heavy nuclei. Time scales of ∼10⊃-18s inferred for fissionlike events from recent crystal blocking measurements were interpreted to show either that quasifission itself is slower than previously believed, or that the fraction of slow fusion-fission is higher than expected. New measurements of mass-angle distributions for Ti48 and Ni64 bombarding W targets show that in these reactions quasifission is the dominant process, typically occurring before the system formed after contact has made a single rotation, corresponding to time scales of ≤10⊃-20s.

AB - The inhibition of fusion by quasifission is crucial in limiting the formation of superheavy elements in collisions of heavy nuclei. Time scales of ∼10⊃-18s inferred for fissionlike events from recent crystal blocking measurements were interpreted to show either that quasifission itself is slower than previously believed, or that the fraction of slow fusion-fission is higher than expected. New measurements of mass-angle distributions for Ti48 and Ni64 bombarding W targets show that in these reactions quasifission is the dominant process, typically occurring before the system formed after contact has made a single rotation, corresponding to time scales of ≤10⊃-20s.

UR - http://www.scopus.com/inward/record.url?scp=79551593942&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.106.052701

DO - 10.1103/PhysRevLett.106.052701

M3 - Article

SN - 0031-9007

VL - 106

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 052701

ER -

Predominant time scales in fission processes in reactions of S, Ti and Ni with W: Zeptosecond versus attosecond

Abstract

Access to Document

Other files and links

Fingerprint

Cite this