دورية أكاديمية
Disintegration of diminutive liquid helium jets in vacuum.
| العنوان: | Disintegration of diminutive liquid helium jets in vacuum. |
|---|---|
| المؤلفون: | Tanyag RMP; Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA., Feinberg AJ; Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA., O'Connell SMO; Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA., Vilesov AF; Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA. |
| المصدر: | The Journal of chemical physics [J Chem Phys] 2020 Jun 21; Vol. 152 (23), pp. 234306. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Institute of Physics Country of Publication: United States NLM ID: 0375360 Publication Model: Print Cited Medium: Internet ISSN: 1089-7690 (Electronic) Linking ISSN: 00219606 NLM ISO Abbreviation: J Chem Phys Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Publication: New York, NY : American Institute of Physics Original Publication: Lancaster, Pa., American Institute of Physics. |
| مستخلص: | The phenomenon of liquid jets disintegrating into droplets has attracted the attention of researchers for more than 200 years. An overwhelming fraction of these studies considered classical viscous liquid jets issuing into ambient atmospheric gases, such as air. Here, we present an optical shadowgraphy study of the disintegration of a cryogenic liquid helium jet produced with a 5 µm diameter nozzle into vacuum. The physical properties of liquid helium, such as its density, surface tension, and viscosity, change dramatically as the jet flows through the nozzle and evaporatively cools in vacuum, eventually reaching the superfluid state. In this study, we demonstrate that, at different stagnation pressures and temperatures, droplet formation may involve spraying, capillary breakup, jet branching, and/or flashing and cavitation. The average droplet sizes produced in this work range from 3.4 × 10 12 to 6.5 × 10 12 helium atoms or 6.7-8.3 µm in diameter. This paper also reports on the distributions of sizes and shapes of the resulting droplets. |
| تواريخ الأحداث: | Date Created: 20200624 Latest Revision: 20200624 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1063/5.0004503 |
| PMID: | 32571041 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Scitation. | تدمد: | 1089-7690 |
|---|---|
| DOI: | 10.1063/5.0004503 |