Orders of Magnitude Improved Cyclotron-Mode Cooling for Non-Destructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons

Autor: Latacz, B. M., Fleck, M., Jaeger, J. I., Umbrazunas, G., Arndt, B. P., Erlewein, S. R., Wursten, E. J., Devlin, J. A., Micke, P., Abbass, F., Schweitzer, D., Wiesinger, M., Will, C., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Soter, A., Quint, W., Walz, J., Yamazaki, Y., Smorra, C., Ulmer, S.

We demonstrate efficient sub-thermal cooling of the modified cyclotron mode of a single trapped antiproton and reach particle temperatures $T_+=E_+/k_\text{B}$ below $200\,$mK in preparation times shorter than $500\,$s. This corresponds to the fastes

Externí odkaz: http://arxiv.org/abs/2404.07928

Ultra thin polymer foil cryogenic window for antiproton deceleration and storage

Autor: Latacz, B. M., Arndt, B. P., Devlin, J. A., Erlewein, S. R., Fleck, M., Jäger, J. I., Micke, P., Umbrazunas, G., Wursten, E., Abbass, F., Schweitzer, D., Wiesinger, M., Will, C., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Smorra, C., Sótér, A., Quint, W., Walz, J., Yamazaki, Y., Ulmer, S.

We present the design and characterisation of a cryogenic window based on an ultra-thin aluminised PET foil at T < 10K, which can withstand a pressure difference larger than 1bar at a leak rate < $1\times 10^{-9}$ mbar$\cdot$ l/s. Its thickness of ap

Externí odkaz: http://arxiv.org/abs/2308.12873

BASE-STEP: A transportable antiproton reservoir for fundamental interaction studies

Autor: Smorra, C., Abbass, F., Bohman, M., Dutheil, Y., Hobl, A., Popper, D., Arndt, B., Bauer, B. B., Devlin, J. A., Erlewein, S., Fleck, M., Jäger, J. I., Latacz, B. M., Micke, P., Schiffelholz, M., Umbrazunas, G., Wiesinger, M., Will, C., Wursten, E., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Quint, W., Soter, A., Walz, J., Yamazaki, Y., Ulmer, S.

Publikováno v: Review of Scientific Instruments 94, 113201 (2023)

Currently, the only worldwide source of low-energy antiprotons is the AD/ELENA facility located at CERN. To date, all precision measurements on single antiprotons have been conducted at this facility and provide stringent tests of the fundamental int

Externí odkaz: http://arxiv.org/abs/2304.09555

Contribution of malnutrition to infant and child deaths in Sub-Saharan Africa and South Asia

Autor: Khatia Munguambe, Quique Bassat, Mahbubur Rahman, Sibone Mocumbi, Cynthia G Whitney, Amy Wise, Shams El Arifeen, Meerjady Sabrina Flora, Soter Ameh, Emily S Gurley, Mustafizur Rahman, Ariel Nhacolo, Cheick Bougadari Traore, Inacio Mandomando, Clara Menendez, Janet Agaya, Jane Juma, Shabir A Madhi, Tadesse Gure, George Aol, Hennie Lombaard, Ziyaad Dangor, James Bunn, Samba O Sow, Amara Jambai, Dickson Gethi, Sanwarul Bari, Natalia Rakislova, Tacilta Nhampossa, Maria Maixenchs, Mohammed Kamal, Joseph Oundo, Lola Madrid, Tahmina Shirin, Ikechukwu Udo Ogbuanu, Addisu Alemu, Hailemariam Legesse, Awa Traore, Portia C Mutevedzi, Helina Heluf, Victor Akelo, Dickens Onyango, Richard Omore, Yasmin Adam, Peter Otieno, Margaret Mannah, Karen L Kotloff, Milagritos D Tapia, Rima Koka, Mohammad Zahid Hossain, Dickens Kowuor, Tom Sesay, James Squire, Francis Moses, Kitiezo Aggrey Igunza, Andrew Moseray, Afruna Rahman, Nana Kourouma, Seydou Sissoko, Rosauro Varo, Sana Mahtab, Martin Hale, Jeanie du Toit, Zachary J Madewell, Dianna M Blau, Fatima Solomon, Gillian Sorour, Jeannette Wadula, Karen Petersen, Sanjay G Lala, Sithembiso Velaphi, Richard Chawana, Nellie Myburgh, Shahana Parveen, Mahbubul Hoque, Saria Tasnim, Ferdousi Islam, Farida Ariuman, Mohammad Mosiur Rahman, Dilruba Ahmed, Fikremelekot Temesgen, Melisachew Mulatu Yeshi, Mahlet Abayneh Gizaw, Stian MS Orlien, Solomon Ali, Peter Nyamthimba Onyango, Richard Oliech, Joyce Akinyi Were, Thomas Misore, Harun Owuor, Christopher Muga, Christine Ochola, Ashka Mehta, Brigitte Gaume, Adama Mamby Keita, Diakaridia Kone, Diakaridia Sidibe, Doh Sanogo, Kounandji Diarra, Tiéman Diarra, Kiranpreet Chawla, Zara Manhique, Fatmata Bintu Tarawally, Martin Seppeh, Ronald Mash, Julius Ojulong, Babatunde Duduyemi, Alim Swaray-Deen, Okokon Ita, Cornell Chukwuegbo, Sulaiman Sannoh, Princewill Nwajiobi, Erick Kaluma, Oluseyi Balogun, Carrie Jo Cain, Solomon Samura, Samuel Pratt, Joseph Kamanda Sesay, Osman Kaykay, Binyam Halu, Francis Smart, Sartie Kenneh, Ferdousi Begum, Priya Mehta-Gupta Das, Ogony Benard Oluoch, Caleb K Sagam, Ronita Luke, Milton Kincardett, Elisio G Xerinda, Markus Roos Breines, Ketema Degefa, J. Anthony G Scott, Kazi Munisul Islam, Parminder S Suchdev, Nelesh P. Govender, Peter J. Swart, Nawshad Uddin Ahmed, Alexander M. Ibrahim, Sharon M. Tennant, Carol L. Greene, J. Kristie Johnson, Karen D. Fairchild, Uma U. Onwuchekwa, Joseph Bangura

Publikováno v: BMJ Global Health, Vol 9, Iss 12 (2024)

Introduction Malnutrition contributes to 45% of all childhood deaths globally, but these modelled estimates lack direct measurements in countries with high malnutrition and under-5 mortality rates. We investigated malnutrition’s role in infant and

Externí odkaz: https://doaj.org/article/080ae47446d94bdfba6536fa9e658e9e

Room-temperature emission of muonium from aerogel and zeolite targets

Autor: Antognini, A., Crivelli, P., Gerchow, L., Hume, T. D., Kirch, K., Knecht, A., Nuber, J., Papa, A., Ritjoho, N., Sakurai, M., Soter, A., Taqqu, D., Vogiatzi, S. M., Zhang, J., Ziegler, L.

A low-emittance, high-intensity atomic beam of muonium ($\mathrm{M}=\mu^+ + \mathrm{e}^-$) using superfluid helium as muon-to-muonium converter is being developed at the Paul Scherrer Institute (PSI). This beam could advance laser spectroscopy of muo

Externí odkaz: http://arxiv.org/abs/2208.11491