Spectroscopy of 212Po and 213At using a 8He radioactive beam and EXOGAM

A. B. Garnsworthy; N. J. Thompson; Zs Podolyák; P. M. Walker; S. J. Williams; G. D. Dracoulis; G. De France; G. J. Lane; K. Andgren; A. M. Bruce; A. P. Byrne; W. N. Catford; B. Cederwall; G. A. Jones; B. McGuirk; S. Mandal; E. S. Paul; V. Pucknell; N. Redon; B. Rosse; R. J. Senior; G. Sletten

doi:10.1088/0954-3899/31/10/086

Spectroscopy of ²¹²Po and ²¹³At using a ⁸He radioactive beam and EXOGAM

A. B. Garnsworthy^*
, N. J. Thompson
, Zs Podolyák
, P. M. Walker
, S. J. Williams
, G. D. Dracoulis
, G. De France
, G. J. Lane
, K. Andgren
, A. M. Bruce
, A. P. Byrne
, W. N. Catford
, B. Cederwall
, G. A. Jones
, B. McGuirk
, S. Mandal
, E. S. Paul
, V. Pucknell
, N. Redon
, B. Rosse

R. J. Senior, G. Sletten

^*Corresponding author for this work

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

13 Citations (Scopus)

Abstract

A beam of 28 MeV ⁸He particles with an average intensity 2 × 10⁵ ions s^-1, produced by the SPIRAL facility at GANIL, was used to initiate fusion-evaporation reactions in thick targets of ²⁰⁸Pb and ²⁰⁹Bi. Excited states of ²¹²Po and ²¹³At were populated in (⁸He,4n) reactions. The emitted γ-rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that ²¹²Po has been populated to high spin (I ≃ 14) with a significantly increased yield compared with our previous ⁸He beam experiment. An apparently increased relative population of states up to 12⁺ was observed compared with published results from a ²⁰⁸Pb(⁹Be,αn)²¹²Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13^-→ 12⁺). States up to I^π ≤ (39/2^-) have also been observed in ²¹³At.

Original language	English
Pages (from-to)	S1851-S1854
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	31
Issue number	10
DOIs	https://doi.org/10.1088/0954-3899/31/10/086
Publication status	Published - 1 Oct 2005

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Garnsworthy, A. B., Thompson, N. J., Podolyák, Z., Walker, P. M., Williams, S. J., Dracoulis, G. D., De France, G., Lane, G. J., Andgren, K., Bruce, A. M., Byrne, A. P., Catford, W. N., Cederwall, B., Jones, G. A., McGuirk, B., Mandal, S., Paul, E. S., Pucknell, V., Redon, N., ... Sletten, G. (2005). Spectroscopy of ²¹²Po and ²¹³At using a ⁸He radioactive beam and EXOGAM. Journal of Physics G: Nuclear and Particle Physics, 31(10), S1851-S1854. https://doi.org/10.1088/0954-3899/31/10/086

@article{8998776339924735b5cadad56564f665,

title = "Spectroscopy of 212Po and 213At using a 8He radioactive beam and EXOGAM",

abstract = "A beam of 28 MeV 8He particles with an average intensity 2 × 105 ions s-1, produced by the SPIRAL facility at GANIL, was used to initiate fusion-evaporation reactions in thick targets of 208Pb and 209Bi. Excited states of 212Po and 213At were populated in (8He,4n) reactions. The emitted γ-rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that 212Po has been populated to high spin (I ≃ 14) with a significantly increased yield compared with our previous 8He beam experiment. An apparently increased relative population of states up to 12+ was observed compared with published results from a 208Pb(9Be,αn)212Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13-→ 12+). States up to Iπ ≤ (39/2-) have also been observed in 213At.",

author = "Garnsworthy, \{A. B.\} and Thompson, \{N. J.\} and Zs Podoly{\'a}k and Walker, \{P. M.\} and Williams, \{S. J.\} and Dracoulis, \{G. D.\} and \{De France\}, G. and Lane, \{G. J.\} and K. Andgren and Bruce, \{A. M.\} and Byrne, \{A. P.\} and Catford, \{W. N.\} and B. Cederwall and Jones, \{G. A.\} and B. McGuirk and S. Mandal and Paul, \{E. S.\} and V. Pucknell and N. Redon and B. Rosse and Senior, \{R. J.\} and G. Sletten",

year = "2005",

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doi = "10.1088/0954-3899/31/10/086",

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Garnsworthy, AB, Thompson, NJ, Podolyák, Z, Walker, PM, Williams, SJ, Dracoulis, GD, De France, G, Lane, GJ, Andgren, K, Bruce, AM, Byrne, AP, Catford, WN, Cederwall, B, Jones, GA, McGuirk, B, Mandal, S, Paul, ES, Pucknell, V, Redon, N, Rosse, B, Senior, RJ & Sletten, G 2005, 'Spectroscopy of ²¹²Po and ²¹³At using a ⁸He radioactive beam and EXOGAM', Journal of Physics G: Nuclear and Particle Physics, vol. 31, no. 10, pp. S1851-S1854. https://doi.org/10.1088/0954-3899/31/10/086

TY - JOUR

T1 - Spectroscopy of 212Po and 213At using a 8He radioactive beam and EXOGAM

AU - Garnsworthy, A. B.

AU - Thompson, N. J.

AU - Podolyák, Zs

AU - Walker, P. M.

AU - Williams, S. J.

AU - Dracoulis, G. D.

AU - De France, G.

AU - Lane, G. J.

AU - Andgren, K.

AU - Bruce, A. M.

AU - Byrne, A. P.

AU - Catford, W. N.

AU - Cederwall, B.

AU - Jones, G. A.

AU - McGuirk, B.

AU - Mandal, S.

AU - Paul, E. S.

AU - Pucknell, V.

AU - Redon, N.

AU - Rosse, B.

AU - Senior, R. J.

AU - Sletten, G.

PY - 2005/10/1

Y1 - 2005/10/1

N2 - A beam of 28 MeV 8He particles with an average intensity 2 × 105 ions s-1, produced by the SPIRAL facility at GANIL, was used to initiate fusion-evaporation reactions in thick targets of 208Pb and 209Bi. Excited states of 212Po and 213At were populated in (8He,4n) reactions. The emitted γ-rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that 212Po has been populated to high spin (I ≃ 14) with a significantly increased yield compared with our previous 8He beam experiment. An apparently increased relative population of states up to 12+ was observed compared with published results from a 208Pb(9Be,αn)212Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13-→ 12+). States up to Iπ ≤ (39/2-) have also been observed in 213At.

AB - A beam of 28 MeV 8He particles with an average intensity 2 × 105 ions s-1, produced by the SPIRAL facility at GANIL, was used to initiate fusion-evaporation reactions in thick targets of 208Pb and 209Bi. Excited states of 212Po and 213At were populated in (8He,4n) reactions. The emitted γ-rays were detected using the EXOGAM array composed of four Compton suppressed germanium Clover detectors in a close geometry configuration. Preliminary results show that 212Po has been populated to high spin (I ≃ 14) with a significantly increased yield compared with our previous 8He beam experiment. An apparently increased relative population of states up to 12+ was observed compared with published results from a 208Pb(9Be,αn)212Po reaction at 48 MeV. Evidence is presented for a previously unreported de-excitation pathway: 69 keV (13-→ 12+). States up to Iπ ≤ (39/2-) have also been observed in 213At.

UR - https://www.scopus.com/pages/publications/25444458043

U2 - 10.1088/0954-3899/31/10/086

DO - 10.1088/0954-3899/31/10/086

M3 - Article

SN - 0954-3899

VL - 31

SP - S1851-S1854

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

IS - 10

ER -

Spectroscopy of ²¹²Po and ²¹³At using a ⁸He radioactive beam and EXOGAM

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