The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np

C.T.A.M. Laat, de; A. Taal; W. Duinker; J. Konijn; J.F.M. Achard van Enschut, d'; P. David; J. Hartfiel; H. Janszen; T. Mayer-Kuckuk; R. Mutius, von; C. Piller; L.A. Schaller; L. Schellenberg; T. Krogulski; C. Petitjean; H.W. Reist; W. Müller

doi:10.1016/0370-2693(87)91260-3

The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np

C.T.A.M. Laat, de
, A. Taal
, W. Duinker
, J. Konijn
, J.F.M. Achard van Enschut, d'
, P. David
, J. Hartfiel
, H. Janszen
, T. Mayer-Kuckuk
, R. Mutius, von
, C. Piller
, L.A. Schaller
, L. Schellenberg
, T. Krogulski
, C. Petitjean
, H.W. Reist
, W. Müller

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

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Abstract

The X-ray spectrum of muonic and pionic 237Np has been investigated with muons and pions stopped in a NpO2 target. The nuclear spectroscopic quadrupole moment was determined to be Q=3.886±0.006 b from the splittings of the muonic 5g¿4f hyperfine complexes. The B(E2)¿-values for the first and second excited states were evaluated as 3.17±0.08 and 2.77±0.10 e2b 2, respectively. A comparison between the muonic and pionic 5g¿4f hyperfine complexes yields the strong interaction parameters for the pionic 4f state. For the first time a change of sign as function of Z for the strong interaction quadrupole shift e2(4f) has been observed. The standard optical model predictions agree reasonably well with the measured strong interaction monopole optical shift, e0(4f), and width, ¿0(4f), while they disagree with the experimental value for e2. A stronger s-wave repulsion in the potential could explain this effect.

Original language	English
Pages (from-to)	7-11
Journal	Physics Letters B
Volume	189
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(87)91260-3
Publication status	Published - 1987

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Laat, de, C. T. A. M., Taal, A., Duinker, W., Konijn, J., Achard van Enschut, d', J. F. M., David, P., Hartfiel, J., Janszen, H., Mayer-Kuckuk, T., Mutius, von, R., Piller, C., Schaller, L. A., Schellenberg, L., Krogulski, T., Petitjean, C., Reist, H. W., & Müller, W. (1987). The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np. Physics Letters B, 189(1-2), 7-11. https://doi.org/10.1016/0370-2693(87)91260-3

@article{7d4c02e456ed40348c7a429a94632f07,

title = "The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np",

abstract = "The X-ray spectrum of muonic and pionic 237Np has been investigated with muons and pions stopped in a NpO2 target. The nuclear spectroscopic quadrupole moment was determined to be Q=3.886±0.006 b from the splittings of the muonic 5g¿4f hyperfine complexes. The B(E2)¿-values for the first and second excited states were evaluated as 3.17±0.08 and 2.77±0.10 e2b 2, respectively. A comparison between the muonic and pionic 5g¿4f hyperfine complexes yields the strong interaction parameters for the pionic 4f state. For the first time a change of sign as function of Z for the strong interaction quadrupole shift e2(4f) has been observed. The standard optical model predictions agree reasonably well with the measured strong interaction monopole optical shift, e0(4f), and width, ¿0(4f), while they disagree with the experimental value for e2. A stronger s-wave repulsion in the potential could explain this effect.",

author = "\{Laat, de\}, C.T.A.M. and A. Taal and W. Duinker and J. Konijn and \{Achard van Enschut, d'\}, J.F.M. and P. David and J. Hartfiel and H. Janszen and T. Mayer-Kuckuk and \{Mutius, von\}, R. and C. Piller and L.A. Schaller and L. Schellenberg and T. Krogulski and C. Petitjean and H.W. Reist and W. M{\"u}ller",

year = "1987",

doi = "10.1016/0370-2693(87)91260-3",

language = "English",

volume = "189",

pages = "7--11",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

Laat, de, CTAM, Taal, A, Duinker, W, Konijn, J, Achard van Enschut, d', JFM, David, P, Hartfiel, J, Janszen, H, Mayer-Kuckuk, T, Mutius, von, R, Piller, C, Schaller, LA, Schellenberg, L, Krogulski, T, Petitjean, C, Reist, HW & Müller, W 1987, 'The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np', Physics Letters B, vol. 189, no. 1-2, pp. 7-11. https://doi.org/10.1016/0370-2693(87)91260-3

TY - JOUR

T1 - The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np

AU - Laat, de, C.T.A.M.

AU - Taal, A.

AU - Duinker, W.

AU - Konijn, J.

AU - Achard van Enschut, d', J.F.M.

AU - David, P.

AU - Hartfiel, J.

AU - Janszen, H.

AU - Mayer-Kuckuk, T.

AU - Mutius, von, R.

AU - Piller, C.

AU - Schaller, L.A.

AU - Schellenberg, L.

AU - Krogulski, T.

AU - Petitjean, C.

AU - Reist, H.W.

AU - Müller, W.

PY - 1987

Y1 - 1987

N2 - The X-ray spectrum of muonic and pionic 237Np has been investigated with muons and pions stopped in a NpO2 target. The nuclear spectroscopic quadrupole moment was determined to be Q=3.886±0.006 b from the splittings of the muonic 5g¿4f hyperfine complexes. The B(E2)¿-values for the first and second excited states were evaluated as 3.17±0.08 and 2.77±0.10 e2b 2, respectively. A comparison between the muonic and pionic 5g¿4f hyperfine complexes yields the strong interaction parameters for the pionic 4f state. For the first time a change of sign as function of Z for the strong interaction quadrupole shift e2(4f) has been observed. The standard optical model predictions agree reasonably well with the measured strong interaction monopole optical shift, e0(4f), and width, ¿0(4f), while they disagree with the experimental value for e2. A stronger s-wave repulsion in the potential could explain this effect.

AB - The X-ray spectrum of muonic and pionic 237Np has been investigated with muons and pions stopped in a NpO2 target. The nuclear spectroscopic quadrupole moment was determined to be Q=3.886±0.006 b from the splittings of the muonic 5g¿4f hyperfine complexes. The B(E2)¿-values for the first and second excited states were evaluated as 3.17±0.08 and 2.77±0.10 e2b 2, respectively. A comparison between the muonic and pionic 5g¿4f hyperfine complexes yields the strong interaction parameters for the pionic 4f state. For the first time a change of sign as function of Z for the strong interaction quadrupole shift e2(4f) has been observed. The standard optical model predictions agree reasonably well with the measured strong interaction monopole optical shift, e0(4f), and width, ¿0(4f), while they disagree with the experimental value for e2. A stronger s-wave repulsion in the potential could explain this effect.

U2 - 10.1016/0370-2693(87)91260-3

DO - 10.1016/0370-2693(87)91260-3

M3 - Article

SN - 0370-2693

VL - 189

SP - 7

EP - 11

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

The quadrupole moment and strong interaction parameters from muonic and pionic X-ray studies of 237Np

Abstract

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