An experimental investigation of light emission produced in the process of positronium formation in matter
Literature Information
M. Pietrow, R. Zaleski, A. Wagner, P. Słomski, E. Hirschmann, R. Krause-Rehberg, M. O. Liedke, M. Butterling, D. Weinberger
The excess energy emitted during the positronium (Ps) formation in condensed matter may be released as light. Spectroscopic analysis of this light can be a new method of studying the electronic properties of materials. We report the first experimental attempt, according to our knowledge, to verify the existence of this emission process. As a result, the possibility of the emission of photons during Ps formation is within the experimental uncertainty in two different solids: an n-alkane and porous silica. However, it seems that the Ps formation on the alkane surface is not accompanied by the emission of photons with energy in the detection range of 1.6–3.8 eV. Various processes that can influence the energy of the photon emitted during the Ps formation are discussed to elucidate this issue. To aid future experiments, equations were developed to estimate the expected ratio of light emission events to annihilation events with the presence or absence of a photon during the Ps formation.
Related Literature
The atmospheric oxidation mechanism of 2-methylnaphthalene
Runrun Wu, Yun Li, Shanshan Pan, Sainan Wang
DOI: 10.1039/C5CP02731D
A novel anode comprised of C&N co-doped Co3O4 hollow nanofibres with excellent performance for lithium-ion batteries
Chunshuang Yan, Gang Chen, Jingxue Sun, Xin Zhou, Chade Lv
DOI: 10.1039/C6CP02660E
The role of the substrate structure in the on-surface synthesis of organometallic and covalent oligophenylene chains
Jingya Dai, Qitang Fan, Tao Wang, Julian Kuttner, Gerhard Hilt, J. Michael Gottfried, Junfa Zhu
DOI: 10.1039/C6CP03551E
The effect of terminal substituents on the electronic properties of rod-shaped [HGaNH]n oligomers
A. V. Pomogaeva, A. Y. Timoshkin
DOI: 10.1039/C6CP02576E
What is the thermal conductivity limit of silicon germanium alloys?
Yongjin Lee, Alexander J. Pak, Gyeong S. Hwang
DOI: 10.1039/C6CP04388G
Correlation of the molecular structure of host materials with lifetime and efficiency of blue phosphorescent organic light-emitting diodes
Ji Won Yang, Jun Yeob Lee
DOI: 10.1039/C5CP03469H
Energy dissipative photoprotective mechanism of carotenoid spheroidene from the photoreaction center of purple bacteria Rhodobacter sphaeroides
Sundaram Arulmozhiraja, Naoki Nakatani, Akira Nakayama
DOI: 10.1039/C5CP03089G
The unexpectedly rich reconstructions of rutile TiO2(011)-(2 × 1) surface and the driving forces behind their formation: an ab initio evolutionary study
Oleg D. Feya, Qiang Zhu, Dongwei Ma
DOI: 10.1039/C6CP01203E
Formation mechanisms and yields of small imidazoles from reactions of glyoxal with NH4+ in water at neutral pH
A. Maxut, B. Nozière, B. Fenet, H. Mechakra
DOI: 10.1039/C5CP03113C
Design and synthesis of ternary Co3O4/carbon coated TiO2 hybrid nanocomposites for asymmetric supercapacitors
Myeongjin Kim, Jaeho Choi, Ilgeun Oh, Jooheon Kim
DOI: 10.1039/C6CP03064E
You might also like
How should waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3) be handled?
Waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3...
How should N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine (CAS: 1318338-47-4) be stored?
N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine should be stored in a tightly sealed c...
What is the market or research trend for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1)?
The market for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1) is...
How should Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) be stored?
Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) ...
What regulatory guidelines apply to 2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3)?
2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3) is regulated under the Glob...
What regulatory guidelines apply to 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 119462-56-5)?
1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 11946...
Are there alternatives to 5-Fluoro-2-(1-pyrrolidinyl)pyridine (CAS: 1287217-79-1) in synthesis?
Several alternatives can be used in the synthesis of 5-Fluoro-2-(1-pyrrolidinyl)...
What precautions should be taken when handling 1-((2R,3R,4R,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxy-3-methoxytetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione (CAS: 153631-19-7)?
Proper personal protective equipment (PPE) must be worn when handling this compo...
What precautions should be taken when handling 6-Bromoimidazo[1,2-a]pyridin-8-amine (CAS: 676371-00-9)?
When handling 6-Bromoimidazo[1,2-a]pyridin-8-amine, it is important to wear appr...
Are there alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochloride (CAS: 1049740-22-8) in synthesis?
Alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochlo...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![[5-fluoro-2-(morpholine-4-carbonyl)phenyl]boronic acid structure [5-fluoro-2-(morpholine-4-carbonyl)phenyl]boronic acid structure](https://static.chemtradehub.com/structs/121/1217501-26-2-505c.webp)
![2-(7,7-Difluorobicyclo[4.1.0]hept-1-yl)ethanamine structure 2-(7,7-Difluorobicyclo[4.1.0]hept-1-yl)ethanamine structure](https://static.chemtradehub.com/structs/209/2098065-08-6-ff24.webp)

![4-[(2-{2-[2-(2-Aminoethoxy)ethoxy]ethoxy}ethyl)amino]-2-(2,6-dioxo-3-piperidinyl)-1H-isoindole-1,3(2H)-dione structure 4-[(2-{2-[2-(2-Aminoethoxy)ethoxy]ethoxy}ethyl)amino]-2-(2,6-dioxo-3-piperidinyl)-1H-isoindole-1,3(2H)-dione structure](https://static.chemtradehub.com/structs/209/2093416-31-8-3162.webp)
