K-series X-rays from anti-protonic hydrogen and deuterium

Eijk, C.W.E. van; Hollander, R.W.; Langerveld, D.; Okx, W.J.C.; Zoutendijk, A.; Ferreira‐Marques, R.; Baker, C.A.; Batty, C.J.; Clark, S. A.; Moir, James; Sakamoto, Shinichi; Davies, John Dwyfor; Lowe, J.; Nelson, J. M.; Pyle, G.J.; Squier, G.T.A.; Welsh, R. E.; Winter, R. G.; Lingeman, E.W.A.

doi:10.1016/0375-9474(88)90164-9

Cited by 41 publications

(6 citation statements)

References 24 publications

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“…We have now established that this was a spurious effect due to a normalization error in the deuterium run of [9]. Therefore, we now find agreement with an earlier experiment [16][17][18] and recent cascade calculations by Reifenr6ther and Klempt [19,20]. A particular strong width of the 3 d state is no longer needed to fit the cascade data in antiprotonic deuterium.…”

Section: Balmer Transitionssupporting

confidence: 83%

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Precision measurement of antiprotonic hydrogen and deuterium X-rays

Heitlinger

Bacher

Badertscher

et al. 1992

Z. Physik A - Hadrons and Nuclei

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X-rays from antiprotonic hydrogen and deuterium have been measured at low pressures. Using the cyclotron trap, a 105 MeV/c antiproton beam from LEAR was stopped with an efficiency of 86% in 30 mbar hydrogen gas in a volume of only 100 cm 3. The X-rays were measured with Si(Li) detectors and a Xe-CH 4 drift chamber. The strong interaction shift and broadening of the Lyman e transition and the spin-averaged 2p width in antiprotonic hydrogen was measured with unprecedented accuracy. The triplet component of the ground state in antiprotonic hydrogen was determined for the first time.

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Section: Balmer Transitionssupporting

confidence: 83%

“…11. Experimental results (1 a errors) of strong interaction shifts and widths (PS171 [27], PS174 [16,17], PS175 (see Table 3) with theoretical predictions (KP [28], DR1 [29], KW [29,30] …”

Section: Omentioning

confidence: 98%

Precision measurement of antiprotonic hydrogen and deuterium X-rays

Heitlinger

Bacher

Badertscher

et al. 1992

Z. Physik A - Hadrons and Nuclei

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“…Two other experiments, PS171 [19] and PS174 [20,21], have also measured X-rays in antiprotonic hydrogen and deuterium at higher pressures. Their latest measurements have been performed at a beam momentum of 105 MeV/c.…”

Section: Analysis and Resultsmentioning

confidence: 95%

Measurement of balmer and lyman X-rays in antiprotonic hydrogen isotopes at pressures below 300 hPa

Bacher

Blüm

Gotta

et al. 1989

Z. Physik A - Atomic Nuclei

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X-rays of Balmer and Lyman transitions in antiprotonic hydrogen and of Balmer transitions in antiprotonic deuterium were observed at pressures below 300 hPa using Si(Li) semiconductor detectors. The measurement was performed at the LEAR-facility at a beam momentum of 202 MeV/c. In order to stop antiprotons in a low pressure gaseous target with high efficiency, a novel technique, the cyclotron trap has been used. Absolute yields were determined and compared with cascade calculations. A distinct difference in the cascade of antiprotonic hydrogen and deuterium is found. The parameters of strong interaction in antiprotonic hydrogen are determined to be 81~ = -(620 + 100)eV, Fls= (1130 _+ 170) eV and F2p = (32-t-10) meV.

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“…A detailed description of the GSPC can be found in [167]. The results on H 2 and D 2 are published in [168][169][170]. Fig.…”

Section: Ps174: the Cold-gas Experimentsmentioning

confidence: 99%

“…Thus, no value was determined for 2P . A search for the Lyman series of pd atoms was not successful and only upper limits (95% condence level) for the yield of K ¿ X-rays per stopped antiproton were given: 8 × 10 −4 and 5 × 10 −4 at 0.25 and 0:92 STP , respectively [170].…”

Section: Ps174: the Cold-gas Experimentsmentioning

confidence: 99%

Antinucleon–nucleon interaction at low energy: scattering and protonium

et al. 2002

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K-series X-rays from anti-protonic hydrogen and deuterium

Cited by 41 publications

References 24 publications

Precision measurement of antiprotonic hydrogen and deuterium X-rays

Precision measurement of antiprotonic hydrogen and deuterium X-rays

Measurement of balmer and lyman X-rays in antiprotonic hydrogen isotopes at pressures below 300 hPa

Antinucleon–nucleon interaction at low energy: scattering and protonium

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