ISOL beams of hafnium isotopes and isomers

U. Koester; O. Arndt; R. Catherall; J.G. Correia; B. Crepieux; R. Eichler; P. Fernier; L.M. Fraile; S. Hennrich; K. Johnston; S. Lukic; J. Neuhausen; B.S. Nara Singh; B. Pfeiffer; E. Siesling

doi:10.1140/epjst/e2007-00327-0

ISOL beams of hafnium isotopes and isomers

U. Koester, O. Arndt, R. Catherall, J.G. Correia, B. Crepieux, R. Eichler, P. Fernier, L.M. Fraile, S. Hennrich, K. Johnston, S. Lukic, J. Neuhausen, B.S. Nara Singh, B. Pfeiffer, E. Siesling

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Abstract

The production of ISOL beams of hafnium is described. Radioactive Hf isotopes were produced at ISOLDE by 1.4 GeV proton-induced spallation in Ta and W foils. Chemical evaporation in form of HfF4 and mass separation in the molecular sideband HfF3+ after electron impact ionization provided intense and pure beams. Beams of 158-185Hf and short-lived isomers down to 1.1 s 177mHf were observed, but the method could be extended to reach even more exotic isotopes: down to about 154Hf (N=82) on the neutron-deficient side and up to neutron-rich 188Hf.

Original language	English
Pages (from-to)	293-296
Number of pages	4
Journal	The European Physical Journal Special Topics
Volume	150
Issue number	1
DOIs	https://doi.org/10.1140/epjst/e2007-00327-0
Publication status	Published - 1 Nov 2007
Externally published	Yes

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Koester, U., Arndt, O., Catherall, R., Correia, J. G., Crepieux, B., Eichler, R., Fernier, P., Fraile, L. M., Hennrich, S., Johnston, K., Lukic, S., Neuhausen, J., Nara Singh, B. S., Pfeiffer, B., & Siesling, E. (2007). ISOL beams of hafnium isotopes and isomers. The European Physical Journal Special Topics, 150(1), 293-296. https://doi.org/10.1140/epjst/e2007-00327-0

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title = "ISOL beams of hafnium isotopes and isomers",

abstract = "The production of ISOL beams of hafnium is described. Radioactive Hf isotopes were produced at ISOLDE by 1.4 GeV proton-induced spallation in Ta and W foils. Chemical evaporation in form of HfF4 and mass separation in the molecular sideband HfF3+ after electron impact ionization provided intense and pure beams. Beams of 158-185Hf and short-lived isomers down to 1.1 s 177mHf were observed, but the method could be extended to reach even more exotic isotopes: down to about 154Hf (N=82) on the neutron-deficient side and up to neutron-rich 188Hf.",

author = "U. Koester and O. Arndt and R. Catherall and J.G. Correia and B. Crepieux and R. Eichler and P. Fernier and L.M. Fraile and S. Hennrich and K. Johnston and S. Lukic and J. Neuhausen and {Nara Singh}, B.S. and B. Pfeiffer and E. Siesling",

note = "7th International Conference on Radioactive Nuclear Beams, Cortina, ITALY, JUL 02-07, 2006",

year = "2007",

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doi = "10.1140/epjst/e2007-00327-0",

language = "English",

volume = "150",

pages = "293--296",

journal = "The European Physical Journal Special Topics",

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TY - JOUR

T1 - ISOL beams of hafnium isotopes and isomers

AU - Koester, U.

AU - Arndt, O.

AU - Catherall, R.

AU - Correia, J.G.

AU - Crepieux, B.

AU - Eichler, R.

AU - Fernier, P.

AU - Fraile, L.M.

AU - Hennrich, S.

AU - Johnston, K.

AU - Lukic, S.

AU - Neuhausen, J.

AU - Nara Singh, B.S.

AU - Pfeiffer, B.

AU - Siesling, E.

N1 - 7th International Conference on Radioactive Nuclear Beams, Cortina, ITALY, JUL 02-07, 2006

PY - 2007/11/1

Y1 - 2007/11/1

N2 - The production of ISOL beams of hafnium is described. Radioactive Hf isotopes were produced at ISOLDE by 1.4 GeV proton-induced spallation in Ta and W foils. Chemical evaporation in form of HfF4 and mass separation in the molecular sideband HfF3+ after electron impact ionization provided intense and pure beams. Beams of 158-185Hf and short-lived isomers down to 1.1 s 177mHf were observed, but the method could be extended to reach even more exotic isotopes: down to about 154Hf (N=82) on the neutron-deficient side and up to neutron-rich 188Hf.

AB - The production of ISOL beams of hafnium is described. Radioactive Hf isotopes were produced at ISOLDE by 1.4 GeV proton-induced spallation in Ta and W foils. Chemical evaporation in form of HfF4 and mass separation in the molecular sideband HfF3+ after electron impact ionization provided intense and pure beams. Beams of 158-185Hf and short-lived isomers down to 1.1 s 177mHf were observed, but the method could be extended to reach even more exotic isotopes: down to about 154Hf (N=82) on the neutron-deficient side and up to neutron-rich 188Hf.

U2 - 10.1140/epjst/e2007-00327-0

DO - 10.1140/epjst/e2007-00327-0

M3 - Article

SN - 1951-6355

VL - 150

SP - 293

EP - 296

JO - The European Physical Journal Special Topics

JF - The European Physical Journal Special Topics

IS - 1

ER -

ISOL beams of hafnium isotopes and isomers

Abstract

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